The volume % of ethanol in the solution is 3.04%.
What is volume?
A three-dimensional space's volume can be calculated. It is frequently expressed numerically using units derived from SI (like the cubic metre and litre) or by different imperial us Or customary modules (such as the gallon, quart, cubic inch). Volume and length are related by the description of length (cubed). In contrast to how much space the container actually occupies, the volume of the a container is typically thought of as its carrying capacity, or the amount of fluid (liquid or gas) that it could hold. Volume was first measured in the past using naturally occurring containers of a similar shape, and later, standardised containers.
Volume % of ethanol = (7 ml ethanol / (7 ml ethanol + 222.2 ml water)) x 100
= (7/229.2) x 100
= 3.04% ethanol
Therefore, the volume % of ethanol in the solution is 3.04%.
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Based on the electron configuration of the
two atoms, predict the ratio of hydrogen to
fluorine in the compound.
The ratio of hydrogen to fluorine in the compound is 1:2.
What is electron configuration?
Electronic configuration, also referred to as electronic structure or electron configuration, is the configuration of electrons in orbitals around an atomic nucleus.
What is atom?
A chemical element's atom is a particular type of particle of matter. A positively charged electron or multiple negatively charged electrons surround the central nucleus of an atom. Protons and neutrons, two relatively heavy particles that make up the positively charged nucleus, may be present.
The electronic configuration of hydrogen has one valence shell order of the configuration, fluorine has two valence shells.
Therefore, ratio of hydrogen to fluorine in the compound is 1:2.
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HELP ASAP CHEMISTRY!!!!!!!
In the first image the compound reacting with N₂ is LiF because F has the valency of -1. The second reaction with N₂ is the reaction with CeCl, where the oxidation state of Ce is +1. The products of the given reactions are BaSO₄ because, Ba and sulphate group both have a valency of 2.
What is oxidation state?Oxidation state of an element is the number of electrons it can lose or gain in a reaction. Halogens are having 7 valence electrons and they have to gain one electron to attain octet. Hence, their oxidation state is being -1.
In the first reaction N₂ is reacting with LiF, where Li has the oxidation number of + 1 by giving an electron to F.
In the second reaction the element with Cl is cesium and not strontium. Cesium metal loses one electron to Cl forming its +1 oxidation state.
For the third reaction , barium chloride and magnesium sulphate forms the products BaSO₄ and MgCl₂. Where the formula of barium sulphate is BaSO₄ because, both Ba and sulphate group has the oxidation number of 2.
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if 2.0 moles of co2 is initially placed into a 5.0-l vessel, calculate the equilibrium concentrations of all species.
The reaction's statement for the equilibrium constant. To find x, substitute the final concentrations and the known K value. Determine each substance's final concentration in the reaction mixture.
How can Beer's law be used to determine equilibrium concentration?Beer's law can be expressed as a straight line with the equation y = mx + b. where m is the slope and l is the incline. In this scenario, calculate c, the concentration of the unknown solution, using the absorbance discovered for your unknown together with the slope of your best fit line.
What is chemistry's equilibrium formula?The amount of each chemical present at equilibrium is calculated using the equilibrium constant. Consider the following chemical reaction: aA+bB+cC+dD.
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7. A sample of 7.0 mL of concentrated sulfuric acid, H₂SO4 is used to make 250. mL of a 0.50 M sulfuric acid solution. What was the initial concentration of the sulfuric acid?
Some nuclear power plants use plutonium-239, which is produced in breeder reactors. the rate-determing step is the second β- emission. how long does it take to make 3.00 kg of 239pu if the reaction is complete when the product is 91.5 % 239pu?
To make 1.00 kg of ²³⁹Pu if the reaction is complete when the product is 90% ²³⁹Pu the time period is 0.357 days.
Definition of Half life
The amount of time it takes for one-half of the radioactive isotope to decay is known as half-life of a radioactive isotope. The half-life of a specific radioactive isotope is constant and it is unaffected by conditions and also independent of the initial amount of that isotope.
Half life of ²³⁹Pu is 2.35 days
K = ln2/t₀.₅
= ln 2/ 2.35
K = 0.294956/ day
N₀ = 1 kg
Nₐ = 0.91kg
K = 1/t ln N₀/ Nₐ
t = 1/K ln(N₀/Nₐ)
t = 0.357 days
Hence, the time period is 0.357 days.
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define bond polarity and bond energy
Explanation:
♤ ϦØЛÐ þØŁΛ尺ɪŤϤ=》Polarity refers to the physical properties of compounds such as boiling point, melting points and their solubilities. ♤ ϦØЛÐ ƐЛƐ尺ƓϤ=》Bond energy is a measure of the bond strength of a chemical bond, and is the amount of energy needed to break the atoms involved in a molecular bond into free atoms.. i hope it helps uh..!! ♥️mark me as brainliest ♥️What particle is emitted (known as an alpha particle)
Answer:
Alpha particles are contains of two neutrons and two protons.
Answer:
Alpha particles are subatomic fragments consisting of two neutrons and two protons. Alpha radiation occurs when the nucleus of an atom becomes unstable (the ratio of neutrons to protons is too low) and alpha particles are emitted to restore balance.
If you made a three-dimensional model of an atom and its nucleus, how would you represent the atom? how would you represent nucleus?.
To represent an atom, you could use a sphere to represent the electron cloud, with the nucleus in the center.
What is atom?
Each atom is made up of a nucleus one and or more electrons that are bound to it. One or even more protons and a significant number of neutrons make up the nucleus. Only the most prevalent type of hydrogen is neutron-free. Atoms that are neutral or ionised make up every solid, liquid, gas, as well as form of plasma. Atoms are incredibly tiny, measuring typically 100 picometers across. Due to quantum effects, they are so small that it is impossible to predict their behaviour with sufficient accuracy using classical physics, as would be the case, for example, if they were tennis balls.
The nucleus could be represented by a smaller sphere or a cube, depending on the size you want to make it. The nucleus is composed of protons and neutrons, so the cube or sphere could be made to represent these particles, with each particle being a different color or size. This way, it would be easier to distinguish between the electron cloud and the nucleus.
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What type of reaction is Ca(OH)2+CaSO4+Al(OH)3
The type of chemical reaction from the problem given " Ca(OH)₂+CaSO4+Al(OH)₃ " is a redox reaction.
Why the reaction Ca(OH)₂+CaSO4+Al(OH)₃ a redox reactionIt is a redox reaction simply because it contains species which undergoes oxidation and the other species which undergoes the reduction process. It is on this premise that we say that the reaction from the task given above is an oxidation and reduction reaction.
In conclusion, we can now deduce from the explanation given above that the substance which undergoes oxidation is a reducing agent while the species which undergo reduction is an oxidizing agent.
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calculate the mass defect in fe-56 if the mass of an fe-56 nucleus is 55.921 amu. the mass of a proton is 1.00728 amu and the mass of a neutron is 1.008665 amu.
The mass is 0.81167 amu
What is mass?Mass is quantitative measure of interia a fundamental quantity of all matter.
Number of protons=42
Number of neutrons = 54
Mass of all the 42 protons = 42× 1.00728= 42.30576 amu
Mass of all 54 neutrons= 54 × 1.008665 = 54.46791 amu
Calculated mass of protons and neutrons in Mo-96 nucleus= 42.30576 amu + 54.46791 amu= 96.77367 amu
Actual mass of Mo-96 nucleus= 95.962 amu
Thus, the mass defect of Mo-96 nucleus= 96.77367 amu - 95.962 amu = 0.81167 amu
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Grams to Moles: how many moles in 196 grams of NaOH
What has the lowest volume 1kg lead, 1kg of iron, 1kg of gold, or 1kg of copper
Answer:
1 kg of lead occupies the smallest amount of space of the four substances
Explanation:
The densities of lead, iron, gold, and copper are 11.34 g/cm^3, 7.87 g/cm^3, 19.32 g/cm^3, and 8.96 g/cm^3, respectively. Therefore, the volumes of 1 kg of lead, iron, gold, and copper are:
Volume of 1 kg lead = 1000 g / 11.34 g/cm^3 = 87.94 cm^3
Volume of 1 kg iron = 1000 g / 7.87 g/cm^3 = 126.98 cm^3
Volume of 1 kg gold = 1000 g / 19.32 g/cm^3 = 51.93 cm^3
Volume of 1 kg copper = 1000 g / 8.96 g/cm^3 = 111.84 cm^3
As we can see, a kilogram of lead has the lowest volume of the four substances, with a volume of 87.94 cm^3. This is because lead is the densest of the four substances, which means that it has the highest mass per unit of volume. Therefore, 1 kg of lead occupies the smallest amount of space of the four substances
hydrogenation of fat does not: a.increase shelf life b.make it harder c.make it more unsaturated d.reduce the tendency for oxidative breakdown
Through hydrogenation processes, an unsaturated fat can be converted to a saturated fat.
Which fats have the lowest shelf life?Chemically speaking, monounsaturated fats are less stable than saturated fats but more stable than polyunsaturated fats. As a result, monounsaturated fats maintain their quality longer than polyunsaturated fats.
Which of the following functions does not include fats?Complete Resolution. Protein, not fat, is a factor in regulating the evolution of genetic traits. Additionally, fat aids in the absorption of vitamins A, D, E, and K. Fat serves as the body's main energy reserve and is essential for functions like digestion.
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Solid sodium reacts with liquid water to form hydrogen gas according to the equation
2 Na(s) + 2 H₂O(l) → 2 NaOH(aq) + H₂(g)
What is the pressure (in atm) of hydrogen gas in the 20.0 L headspace of a reactor vessel when 3.36 kg sodium is reacted with excess water at 50.0 °C?
The pressure (in atm) of hydrogen gas in the 20.0 L headspace of a reactor vessel when 3.36 kg sodium is reacted with excess water at 50.0 °C can be calculated using the ideal gas law, which states that the pressure, volume, and temperature of a gas are related by the equation PV = nRT, where P is the pressure of the gas, V is the volume of the gas, n is the number of moles of gas, R is the ideal gas constant, and T is the temperature of the gas in Kelvin.
To calculate the pressure of the hydrogen gas, we first need to determine the number of moles of hydrogen gas produced by the reaction. We can do this by using the balanced chemical equation for the reaction, which is 2 Na(s) + 2 H₂O(l) → 2 NaOH(aq) + H₂(g).
From the balanced chemical equation, we can see that for every 2 moles of sodium that react, 1 mole of hydrogen gas is produced. Therefore, if 3.36 kg of sodium is reacted with excess water, the number of moles of hydrogen gas produced is 3.36 kg / (22.99 g/mol) = 146.4 moles.
Next, we need to convert the temperature of the gas from degrees Celsius to Kelvin. This can be done by adding 273.15 to the temperature in Celsius, which gives us a temperature of 50.0 + 273.15 = 323.15 K.
Now that we have the number of moles of hydrogen gas and the temperature of the gas, we can plug these values into the ideal gas law equation to calculate the pressure of the hydrogen gas:
P = (nRT) / V
P = (146.4 mol * 0.08206 L*atm / mol*K * 323.15 K) / 20.0 L
P = 4.31 atm
Therefore, the pressure (in atm) of hydrogen gas in the 20.0 L headspace of a reactor vessel when 3.36 kg sodium is reacted with excess water at 50.0 °C is 4.31 atm.
20.03atm
4.
A sample of krypton gas occupies 75.0 mL at 0.400 atm. If the temperature remained constant, what
volume would the krypton occupy at 4.00 atm?
7.5 mL volume would the krypton occupy at 4.00 atm.
The ideal gas law's response is what?The ideal gas law (PV = nRT) connects the macroscopic characteristics of ideal gases. An ideal gas is one in which the particles are both non-repellent and non-attractive to one another (have no volume).
We can solve this part by using again the B:
[tex]p_{1} V_{1} =p_{2} V_{2}[/tex]
Where in this case we have:
[tex]p_{1} =0.400 atm[/tex] is the initial pressure
[tex]V_{1} =75ml[/tex] is the initial volume
[tex]p_{2}=4atm[/tex]is the final pressure
And solving for V2, we find the final volume:
[tex]V_{2} =0.400*75/4 =7.5[/tex]ML
ANWER IS 7.5ML.
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provide the major product of the reaction sequence. if cis/trans isomers are possible, draw only the major isomer. if enantiomers are possible, do not specify configuration.
Answer: The product of two consecutive negative integers is 600. What is the value of the lesser integer?
Explanation: EDGE2021
How much heat is required to change 48. 5 liquid mercury (Hg) at 400 K to vapor at a 700 K? The boiling point of mercury is 629. 88 K
-88 kj
-204 kj
16. 2 kj
30 kj
29 kj
16.2 kJ heat is required to change 48.5 liquid (Hg) at 400 K to vapor at a 700 K.The quantity of heat required to raise the temperature of a substance by one degree Celsius is known as the specific heat capacity.
How to solve?Q = m * cl * ( T f - T i ) + mL + m * cv *T (f) - T (i)
Q = Heat absorbed = ?
m= mass of mercury (Hg)= 48.5 g = 0.0485 kg
c = specific heat capacity = 14.31kj/kgK
L = Latent heat of vaporization = 59.2 kJ
Initial temperature of liquid mercury = T i = 400 K
Final temperature of mercury vapor = T f = 700 K
Putting in the values, we get:
Q=1.56+14.31+0.34
Q=16.2kJ
How is vapor pressure determined at various temperatures?Result for an image mercury's vapor pressure at various temperatures. Use the Clausius-Clapeyron equation to determine the vapor pressure at a specific temperature: ln(P1/P2) = (Hvap/R)((1/T2) - (1/T1)
What degree of heat does mercury evaporate at?The only metal that is liquid at ambient temperature is mercury. When it is over its freezing point, it melts and evaporates like all liquids do. Since mercury has a freezing point of only 37.6°F, it is constantly evaporating.
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What are the values of δs for the water, the surroundings, and the universe for the evaporation of water from an open pan at 25°c?.
The values of δs for the water, the surroundings, and the universe for the evaporation of water from an open pan at 25° are positive, negative, positive
What is entropy?
It is a measure of the unusable energy in a closed thermodynamic system that is also frequently regarded as a measure of the system's disorder, a characteristic of the system's state, and that varies inversely with the system's temperature and immediately with any reversible change in heat in the system.
a measure of the wasted energy in a closed thermodynamic system that is also frequently viewed as a measure of the system's disorder, a characteristic of the system's state, and that varies inversely with the system's temperature and instantly with any reversible change in heat in the system.
Because the system needs to be supplied with thermal energy, which comes from the environment, this phase change is endothermic. As a result, the environment's entropy must decrease (Ssurr must be negative).
According to the Second Law of Thermodynamics, the process is spontaneous because water does evaporate, which suggests that Suniverse > 0. This necessitates that the entropy rise of the liquid water be greater than the entropy decrease of the environment.
Therefore the values of δs for the water, the surroundings, and the universe for the evaporation of water from an open pan at 25° are.positive, negative, positive
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for small molecules and ions, arrange the intermolecular forces according to their relative strengths.
According to small molecules and ions, we order the intermolecular forces according to their relative strengths:
Ion-Ion forcesIon-Dipole forcesHydrogen bondingDipole-Dipole forcesLondon's dispersion forcesThis order is correct because of the nature of the different forces.
What is the nature of the various forces mentioned above?Ion-ion forces are the strongest because they involve the electrostatic attraction between two ions that have opposite charges. Ion-dipole forces involve the attraction between a charged ion and a polar molecule, which is weaker than the ion-ion forces. Hydrogen bonding is a particularly strong form of dipole-dipole interaction that is stronger than regular dipole-dipole forces. Lastly, London dispersion forces are the weakest of the forces because they are caused by temporary dipoles that form due to the random motion of electrons within a molecule.For small molecules and ions, arrange the intermolecular forces according to their relative strengths.
List them from stronger to weaker:
- Ion-ion forces
- Hydrogen bonds
- Dipole-dipole forces
- Ion-dipole forces
- London dispersion forces
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A sample of gallium(III) sulfite, Gaz(SO3)3, contains 1. 95 mol of sulfite ions,
number of moles of gallium(III) ions in the sample is
A sample of gallium(III) sulfite, Gaz(SO3)3, contains 1. 95 mol of sulfite ions,number of moles of gallium(III) ions in the sample is gallium(III) sulfite, Ga2(SO3)3, contains 1.95 mol of sulfite ions. The number of moles of gallium(III) ions in the sample is a 1.30 molb.
What is Molar Mass?
Molten sulfur is burned in air to produce sulfur dioxide gas. stage 2 Sulfur dioxide is reacted with oxygen to form sulfur trioxide. stage 3 Sulfur.the Molar Mass of CuSO4.5H2O. This molecule has 5 molecules of water attached to each molecule of copper sulphate.Gallium is commonly found to have variable charges. For metals like gallium, a Roman numeral is written in the chemical name to indicate its charge . balance chemical equations in molecular, total ionic, and net ionic and 2 moles of oxygen molecules react to yield 1 mole of carbon dioxide.
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A colorimeter is an instrument used to measure the amount of Choose... absorbed by a solution. This absorbance is proportional to the Choose... of the solute in soli Theat light sound absorbed by a solution. This absorbance is A colorimeter is an instrument used to measure the amount of Choose... - proportional to the Choose... of the solute in solution. concentration purity molecular weight
A colorimeter is a device used to gauge how much heat a solution has absorbed. The concentration of the solute in the solution is inversely correlated with this absorbance.
What is a calorimeter?
A calorimeter is a tool used in calorimetry, a technique for calculating heat capacity and measuring the heat of chemical processes or other physical changes. Among the most popular kinds are differential scanning calorimeters, isothermal micro calorimeters, titration calorimeters, and accelerated rate calorimeters.
One at a time, two chemicals A and B are placed in a calorimeter, and the temperatures before and after the reaction are recorded. The enthalpy change per mole of substance A in the process is calculated using these data. The mass and specific heat capacity of the components can be multiplied by the temperature change to provide an estimate of the amount of energy produced or absorbed during the reaction. The enthalpy change of the reaction is calculated by dividing the energy change by the quantity of A that was present.
One at a time, two chemicals A and B are placed in a calorimeter, and the temperatures before and after the reaction are recorded. The enthalpy change per mole of substance A in the process is calculated using these data. The mass and specific heat capacity of the components can be multiplied by the temperature change to provide an estimate of the amount of energy produced or absorbed during the reaction. The enthalpy change of the reaction is calculated by dividing the energy change by the quantity of A that was present.
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NEED HELP AS SOON AS POSSIBLE please
0.08 gram mass of magnesium oxide will be formed.
What is mass?Mass is an intrinsic property in the mass of a body. It was the traditionally believed to the be related to the quantity of matters in the physical body, until it is discovery of the atom and particle in physics.
Mass is quantitative measure of inertia a fundamental quantity of all matters.
2Mg + O 2→2MgO
Molar mass of Mg =24 g
Molar mass of MgO =40 g
No. of moles of O2=6.022×10^20/6.022×10^23
=0.001 mole of O2
No. of moles of Mg=0.486/24
=0.02 moles of Mg
As moles of O 2
are less than 0.01, O 2
is limiting reagent and it is 0.002 moles of MgO is formed.
⇒0.002×40=0.08 g of MgO
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which other element is likely to show a similar chemical reaction with oxygen as shown by magnesium, and to which group does it belong?
The chemical reaction between calcium (Ca) and strontium (Sr) is anticipated to be comparable to that of magnesium (Mg).
What substance resembles oxygen the most chemically?Due to the fact that sulfur is located immediately beneath oxygen on the periodic table, they are chemically identical. The electron structures of these atoms are comparable. Because of this, sulfur can create a variety of compounds that are similar to those made of oxygen.
What happens when Group 2 elements and oxygen interact?I Group 2 Elements and Oxygen Reactions. In the presence of air, the metal oxide tarnishes to create a layer on all Group 2 elements. They violently react with pure oxygen, forming a white ionic oxide. These metals (M) burn vigorously to create a white ionic oxide, M2+O2-, when heated in oxygen.
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How much energy does it take to warm 1. 0 kg of ice from −40°c to 0°c? the specific heat of ice is 2090 j/kg°c.
The energy required is 83,600 j/kg°C, for the given specific heat of the ice.
What is Specific heat?
The amount of heat needed to raise a substance's temperature by one degree Celsius in one gram is also known as specific heat. Typically, calories or joules per gram per degree Celsius are used as the units of specific heat. For instance, water has a specific heat of 1 calorie (or 4.186 joules) per gram per degree Celsius.
What is Energy?
The quantitative quality that is transferred to a physical system or a body is known as energy, and it is evident in the production of heat and light as well as in the performance of work. The law of conservation of energy asserts that although energy can change its form, it cannot be created or destroyed. Energy is a conserved quantity.
What are the calculations?
The total heat required will be the sum of heat energy needed to change the temperature of ice from –40°C to 0°C.
q (total) = mc (ΔT)
= 1 × 2090 × (0 + 40)
= 2090 × 40
= 83,600 j/kg°C
Hence, the energy required is 83,600 j/kg°C, for the given specific heat of the ice.
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Suppose that you use 3.71 g of Iron in the chemical reaction: 2Fe(s) + 3Cu2+(aq) rightwards arrow 2Fe3+(aq) + 3Cu(s). What is the theoretical yield of Cu(s), in grams?
The theoretical yield of Cu, in grams, would be 6.34 grams.
Theoretical yieldThe theoretical yield of a reaction is the yield of the reaction calculated based on the balanced equation of the reaction.
From the balanced equation of the reaction below:
[tex]2Fe(s) + 3Cu^{2+}(aq) --- > 2Fe^{3+} (aq) + 3Cu (s)[/tex]
The mole ratio of the iron that reacts and the copper that is produced is 2:3.
Recall that: mole = mass/molar mass
3.71 g of iron would be: 3.71/56 = 0.066 mol
The equivalent mole of copper that is produced would be; 3/2 x 0.066 = 0.099 mol.
Since, mass = mole x molar mass, the mass of 0.099 mol of copper would be: 0.099 x 64 = 6.34 grams
In other words, the theoretical yield of solid copper [Cu(s)] in grams is 6.34 grams.
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PLEASE HELP I ACTUALLY WANT TO LEARN THIS PROBLEM!!! 125 g Fe₂O3 reacts according to the equation below. Calculate the % yield if
87,000 milligrams of iron are formed?
Fe₂O3 +
C →
125g Fez03x
Fe +
CO
To calculate the % yield, you need to determine the actual yield of the reaction and compare it to the theoretical yield. The actual yield is the amount of product that is actually produced during the reaction, while the theoretical yield is the maximum amount of product that could be produced based on the amounts of reactants used.
In this case, the theoretical yield is 87,000 milligrams of iron, since this is the amount of product that was actually produced. The % yield is calculated by dividing the actual yield by the theoretical yield and multiplying by 100%.
Since the actual yield and the theoretical yield are the same in this case, the % yield is 100%. This means that the reaction had a perfect yield, with all of the reactants being converted into product.
2a) The work function of potaium metal i 2. 29 eV. An particular laer emit pule of light
with a wavelength of 355 nm. What i the maximum K. E. Of electron emitted when 355 nm
light irradiate a clean K urface?
The leftover energy is transformed into kinetic energy after the electrons are brought to the metal surface. hv = + Kmax is the photoelectric formula. Potassium's work function is =2.29eV=2.241.610=19J.
How is a kinetic energy problem solved?Kinetic energy (KE) can be calculated using the formula KE = 0.5 x mv2. Here, m stands for mass, which is a measure of how much matter is contained within an item, and v for velocity, which is a measure of how quickly the thing changes positions.
How is energy calculated in chemistry?To determine the energy shift in a reaction: Energy change is defined as the difference in the bond energies of all the bonds in the reactants and products. This is known as the "energy in" and "energy out" components.
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With what volume of 5. 00 m hf will 4. 03 g of calcium hydroxide react completely, according to the following reaction?.
The volume of 5.00 M HF that will react with 4.72 g of calcium hydroxide is 0.0256 L.
What is volume?volume is a mathematical quantity that defines three diamensional space.
2HF + Ca(OH)₂ → CaF₂ + 2H₂O
Step 1: find the moles of Ca(OH)₂
moles= mass÷ molar mass
from periodic table the molar mass of Ca(OH)₂ = 40 +( 16+1)₂= 74 g/mol
moles = 4.72 g÷ 74 g/mol =0.0638 moles
Step 2: use the moles ratio to determine the moles of Hf
from the equation above HF: Ca(OH)₂ is 2:1
therefore the moles of HF = 0.0638 moles x 2/1 =0.1276 moles
Step 3: find the volume of HF
volume=moles /molarity
molarity =5.00 M = 5.00 mol/L
=0.1276 moles / 5.00 mol/l =0.0256 L
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Complete Question.
The complete Question is attached below
Place a charcoal briquette into a plastic sandwich bag. Lightly hammer the bag enough to break apart the briquette, taking care not to damage the surface that the bagged briquette is on. 1. Examine the broken pieces of charcoal with a hand lens. Describe what kinds of grains you see and their texture. 2. Charcoal is made by allowing wood to smolder just enough that an impure mass of carbon remains. In the presence of oxygen, the charcoal briquette will naturally combine with oxygen to make carbon dioxide. Over a period of many years, it will all react with oxygen and chemically weather to carbon dioxide. When you burn charcoal in your grill, you are simply speeding up the process. However, if plant fragments (peat) are buried beneath layers of sediment that keep oxygen away from them, then they can slowly convert to a charcoal-like material called coal, which is stable for millions of years. Obtain a piece of coal and compare it to your charcoal. How is it different
When looking at the broken pieces of charcoal with a hand lens, you will see small pieces of black matter with a rough texture.
What is charcoal?Charcoal is a combustible, black solid fuel made from partially burned wood, bone, or other organic matter. It is primarily used as a fuel for barbecues, grills, and other cooking methods, and is also used in art and blacksmithing. Charcoal is created by burning wood or other organic material in a limited amount of oxygen, reducing it to a carbon-rich substance. The material is then heated to high temperatures to burn off volatile compounds, leaving behind a black, porous material that is rich in carbon. Charcoal is more efficient than wood as a fuel source because it has a higher energy content and produces fewer pollutants.
The pieces of charcoal are made up of small grains of carbon that were formed when the wood was burned. The texture of the charcoal varies from coarse to fine, depending on the type of wood used in the burning process.
When compared to a piece of coal, the charcoal pieces are much smaller and the texture is more rough. Coal forms when plant materials are buried beneath layers of sediment, which prevents oxygen from reaching them. Over a period of millions of years, these plant materials slowly convert to a charcoal-like material called coal. The coal has a much smoother texture than the charcoal and is made up of larger, more compact pieces of carbon.
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How much energy does it take to warm 1. 0 kg of ice from −40°c to 0°c? the specific heat of ice is 2090 j/kg°c.
The energy required to warm 1. 0 kg of ice from −40°c to 0°c given the specific heat of ice is 2090 j/kg°c.. is 83,600 j/kg°C
What is Specific heat?
The amount of energy required to increase a substance's temperature by one degree Celsius per gram is known as its specific heat. Although it can alternatively be expressed in terms of calories, specific heat is often expressed in Joules per gram per degree Celsius (J/g oC). The specific heat capacity, a number that characterizes this chemical property, varies depending on the substance.
The total heat required will be the sum of heat energy needed to change the temperature of ice from –40°C to 0°C.
q (total) = mc (ΔT)
= 1 × 2090 × (0 + 40)
= 2090 × 40
= 83,600 j/kg°C
Therefore the energy required is 83,600 j/kg°C, for the given specific heat of the ice.
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