6.6ml will be the new volume if the pressure increases to 4 atm and the temperature are lowered to 200 K.
What is an ideal gas equation?The ideal gas law (PV = nRT) relates the macroscopic properties of ideal gases. An ideal gas is a gas in which the particles (a) do not attract or repel one another and (b) take up no space (have no volume).
Given data:
[tex]V_1=20 ml[/tex]
[tex]T_1=3[/tex]
[tex]P_1=2 atm[/tex]
[tex]T_2=200 K[/tex]
[tex]P_2=4 atm[/tex]
[tex]V_2=?[/tex]
Using equation:
[tex]V_2 =[/tex] [tex]\frac{P_1 X V_1 XT_2}{P_2 X T_1}[/tex]
[tex]V_2 =[/tex][tex]\frac{2 atm X 20 ml X200 K}{4 atm X 300 K}[/tex]
[tex]V_2 = 6.6 ml[/tex]
Hence, 6.6ml will be the new volume if the pressure increases to 4 atm and the temperature are lowered to 200 K.
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Emmett is lifting a box vertically. Which forces are necessary for calculating the total force?
Fp, Ff, and Fg
Fp and FN
Fp, FN, and Ff
Fp and Fg
Emmett is lifting a box vertically. The forces that are necessary for calculating the total force is Fp and Fg. The correct option is D.
What is force?Force is an influence or strength that is used to initiate an action or movement. There are total eight types of forces are present.
Fp is the applied force and Fg is the force of gravitation, if Emmett is lifting a box vertically, these force will be applied
Thus, the correct option is D, Fp and Fg.
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Answer:
D
Explanation:
Edge 2022
PLEASE HELP
which anode-carhoden combination would NOT produce a voltaic cell with high voltage?
Ca Ni
AI Cu
Au H
Li Fe
Answer:
The correct answer is Au, H
(Took the exam)
Hydrogen and iodine gas react to form hydrogen iodide, as shown in the equation H2(g) + I2(g) → 2HI(g). Suppose you are given a time interval from t1 = 10 seconds to t2 = 20 seconds and a change in H2 concentration from0.210 mol/L to 0.185 mol/L. Use the reaction rate equation to calculate the average reaction rate during that time period. Show your work.
The average reaction rate during that time period is 0.0025 mol/l.
What is concentration?The concentration of a solution is a measure of the amount of solute that has been dissolved in a given amount of solvent or solution.
Given data:
[tex]t_1[/tex] = 10 seconds
[tex]t_2[/tex] = 20 seconds
[tex]C_1[/tex] = 0.210 mol/L
[tex]C_2[/tex] = 0.185 mol/L
∆C = |[tex]C_2[/tex]–[tex]C_1[/tex]| = |0.185-0.21| = 0.025 mol/l
∆t = [tex]t_2[/tex]– [tex]t_1[/tex] = 20 - 10 = 10 sec
∆C — is the concentration change
∆t — is the time change
V — reaction rate
V= [tex]\frac{\Delta C}{\Delta t}[/tex] = [tex]\frac {0.025}{10}[/tex]= 0.0025 mol/l•sec
Hence, 0.0025 mol/l is the average reaction rate during that time period.
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A gas cylinder contains exactly 1 mole of oxygen gas (O2). How many molecules of oxygen are in the cylinder?
The number of molecules of oxygen in the cylinder is 6.02×1023 molecules
Data obtained from the question
Number of mole of oxygen = 1 mole
Number of molecule of oxygen =?
From Avogadro's hypothesis, we understood that 1 mole of any substance contains 6.02×1023 molecules. This implies that 1 mole of oxygen contains 6.02×1023 molecules.
Since the cylinder contains 1 mole of oxygen, then the number of molecules of oxygen present in the cylinder is 6.02×1023 molecules.
What was one strategy radical republicans used to achieve their goals for
reconstruction?
a. opposing any proposals to amend the u.s. constitution
b. offering to let southern states easily rejoin the united states
c. using the military to protect african american voting rights
d. removing andrew johnson from office through impeachment
submit
Using the military as a tool was what the radical republicans used to achieve their aim of reconstruction.
What is Reconstruction?This was an event which occurred after the American Civil War in which all the chaos were taken care of and normalcy restored to the country.
The radical republicans ensured rights of the people such as voting were protected through the use of the military force and makes option C the correct choice.
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One of the strategy radical republicans used to achieve their goals for reconstruction using the military to protect african american voting rights. That is option C.
What is the radical republican plan?The radical republican plan was the plan set out by the republicans to re-empowers the Freedman's Bureau and set reform efforts in motion that will lead to the 14th and 15th Amendments.
The strategy used by radical republicans include:
They wanted to break the power of wealthy planters who had long ruled the South. They wanted to ensure that freedmen received the right to vote. They used legislative reforms, or changes in laws, to achieve their goals.Therefore, one of the strategy radical republicans used to achieve their goals for reconstruction using the military to protect african american voting rights.
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The graph below shows how the temperature and volume of a gas vary when
the number of moles and the pressure of the gas are held constant. How can
the volume of the gas in a sealed container be decreased if the pressure is
constant?
T
A. By letting the gas diffuse over time
B. By lowering the temperature
C. By raising the temperature
D. By letting the gas effuse over time
The volume of the gas in a sealed container would be decreased at constant pressure: C. by raising the temperature.
What is Charles law?Charles law states that when the pressure of an ideal gas is kept constant, the volume of a gas is directly proportional to the absolute temperature of the gas.
This ultimately implies that, the volume of a gas decreases at constant pressure when its temperature is decreased and vice-versa.
In conclusion, we can infer and logically deduce that the volume of the gas in a sealed container would be decreased at constant pressure by raising the temperature in accordance with Charles law.
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Identify each described physical separation technique. a liquid is carefully poured out, leaving the solid behind in the container. choose... a solid is caught on paper or a membrane while the liquid passes through. choose... a solid mixture is heated. one component transitions directly between solid and gas. choose... a solvent is added to dissolve only one mixture component and then the liquids are separated.
Decanting, filtration, sublimation and distillation are the separation techniques.
Identify the physical separation technique?Decanting is a process in which a liquid is carefully poured out, leaving the solid behind in the container.
A solid is caught on paper or a membrane while the liquid passes through, this process is called Filtration.
Sublimation is a process in which a solid mixture is heated in which one component transitions directly between solid and gas.
A solvent is added to dissolve only one mixture component and then the liquids are separated, this process is known as distillation.
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The physical separation techniques used are :
Decanting FiltrationsublimationdistillationWhat are physical separation techniques ?
Physical Separation techniques are procedures applied for the separation of a mixture of two different states pf matter based on their physical properties. usually solid and liquid mixtures. When a mixture of liquid and solid is separated by carefully pouring out the liquid while leaving the solid behind that separation technique is known as decanting.
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how many neutrons does the isotope lithium have
A.) 3
B.) 5
C.) 8
D.) 4
solve for x
[tex] \bold{x^{2} + 6x + 5 = 0}[/tex]
ty! ~
Answer:
x²+6x+5=0
On comparing with the equation
ax² + bx + c = 0
a=1, b = 6 and c = 5
Now
b²– 4ac = 6² – 4 x 1 x 5 = 36 - 20 = 16
[tex]x = \frac{ - b \:± \: \sqrt{b {}^{2} - 4ac } }{2a} \\ \\ x = \frac{ - 6\:± \: \sqrt{16 } }{2 \times 1} \\ \\ x = \frac{ - 6± {4} }{2} \\ \\ x = \frac{ - 6 + {4} }{2} \: \: or \: \: x = \frac{ - 6 - {4} }{2} \\ \\ \implies \: x = \frac{ \cancel-2 }{ \cancel2}^{-1 }\: \: or \: \: x = \frac{ \cancel-10 }{ \cancel2}^{-5}\\ \\ \implies \: { \blue{\fbox{ \: x = - 1 \: \: \: or \: \: \:x = - 5}}}[/tex]
[tex] {x}^{2} + 6x + 5 = 0 \\ \\ {x}^{2} + 5x + x + 5 = 0 \\ \\ x(x + 5) + 1(x + 5) = 0 \\ \\ (x + 1)(x + 5) = 0.[/tex]
[tex]x = - 1 \\ x = - 5.[/tex]
Question 1 of 5
Which two substances are products of the chemical reactions of cellular
respiration?
A. Oxygen
B. Carbon dioxide
C. Sugar
D. Water
SUBMIT
Answer:
Oxygen and sugar
Explanation:
Hope this helps! Please give branliest.
What is the molarity of a solution that is composed of 2.00 moles of potassium iodide dissolved in 4 l of water
Answer:
0.5 M
Explanation:
molarity = (moles of solute)/(liters of solution)
molarity = 2.00/4 = 0.5 M
help help help help help help
The exercise requires you to complete the sentences using the drop down. The complete sentences are given below.
Which step in the design process is represented by each of the following?The topic that was chosen because many students experienced cracked cell phone screens is: Protecting Cell Phones;Discussing ideas for possible cell phone cases: Phones that are durable;Writing down their list of requirements needed to make the phone case: Colorful and funky.Learn more about completing sentences at:
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4. How can extinct species be saved?
O by helping their numbers increase beyond "critical mass"
by increasing their population numbers
Oby encouraging mating in zoos
They cannot. Extinction is forever.
Extinct species be saved by increasing their population numbers and is denoted as option B.
What is Population?
This is defined as the total number of organisms in a particular area at a given period of time.
Extinct species can be saved by increasing their population through conservation and public awareness.
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what is the molarity of a nitric acid solution HNO3 if 20 ml of the solution is needed to exactly neutralize 10 ml of a 1.67 M NaOH solution?
Answer: 0.84 M
[tex]M_{A}V_{A}=M_{B}V_{B}\\(20)M_{B}=10(1.67)\\M_{B}=\frac{10(1.67)}{20} \approx \boxed{0.84 \text{ M}}[/tex]
In the photo
Pls pls pls pls pls pls pls pls pls pls
The correct answers are Potential and Kinetic energy.
What are potential energy and examples?An object can store energy as a result of its position. For example, the heavy ball of a demolition machine is storing energy when it is held at an elevated position. This stored energy of position is referred to as potential energy. Similarly, a drawn bow is able to store energy as a result of its position.
What is kinetic energy?Kinetic energy is a form of energy that an object or a particle has by reason of its motion. If work, which transfers energy, is done on an object by applying a net force, the object speeds up and thereby gains kinetic energy.
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help me pls thank u oh and worth a brainly
The next step in the engineering design process is to identify the criteria and constraints of the process.
What is engineering design?The process of engineering design has to do with the fabrication of new materials or the reworking of existing materials to fit into certain pre-specified objectives.
In this case, the next step in the engineering design process is to identify the criteria and constraints of the process.
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Gold (Au) should have an electron notation that ends in 6s24f145d9. To become more stable, the electrons in reality rearrange themselves. How do they do it
The electrons rearrange themselves to ensure that orbitals at lower energy levels are first filled before those at higher energy levels.
Electronic configurationOne of the rules of electronic configuration states that lower energy level orbitals are first filled with electrons before higher energy level orbitals.
Thus, the electrons in Gold will rearrange themselves to obey the above rule in order to achieve more stability.
Hence, the electronic configuration becomes: [tex]4f^{14}, 5d^{10} ,6s^1[/tex]
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What happens to the particles in hot water when it cools down
Answer:
its particles slow down and come closer together.
Convert molecules of vitamin d (molar mass 384.7 g/mol) to grams of vitamin d.
The 6.023 * 10²³ molecule means 384.7 grams of Vitamin D.
What is a mole ?A mole is a universal unit used to measure large number of atoms , molecules of an element.
one mole is equal to the Avogadro's Constant.
Mole is equal to the ratio of the mass of a compound to its molecular weight
It is given that Vitamin D is present
no. of molecule = 6.023 * 10²³
6.023 * 10²³ molecule constitutes of 1 mol
1 mole is equal to the molar mass of a compound/ element
Therefore 1 mole = 384.7grams of Vitamin D
and hence 6.023 * 10²³ molecule means 384.7 grams of Vitamin D.
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how much liquid is needed to prepare 629.5ml of a solution that has a new concentration of 14.3m if the stock solution is 25.2m?
Answer:
Right if you think it is.
HELP 15 POINTS!! In canoeing, you paddle backward to go forward. Canoeing can be explained by Newton's third law that says ______________.
Explanation:
Newtons third law states for every action (force) in nature there is an equal and opposite reaction
Complete the chemical equation for the reaction of iron with chlorine
…………Fe + …………. Cl2 -……………….FeCl3
Answer:
I believe that the answer is 2 Fe + 3 Cl2 ---> 2 FeCl3.
Explanation:
You balance the equation by doing this...
FE= 1x2=2 FE= 1x2=2
CL= 2x3=6 CL+2x3=6
Hope this helps! :)
Please help!! Needed by today!!
Answer:
heres your answer 50gms
what is the specific heat capacity of propan-1-ol
Answer:
14
Explanation:
sun normal persentage is 14
A container contains three gasses, N2, O2 and Ar, with partial pressures of 23.3 kPa, 40.9 kPa and 13.7 kPa respectively. What is the total pressure inside the container
16) a 110,52 g sample of mineral water is analyzed for its magnesium content. the mg2+ in the sample if first precipitated as mgnh4po4 and the precipitate is then converted to mg2p2o7 which is found to weigh 0,0549 g. express the quantity of magnesium in the sample in ppm (g of mg per million grams of h2o)
The amount of the magnesium in the sample in ppm is 497 ppm.
What is parts per million?The term parts per million refers to one of the manners in which concentration is expressed. It is common in oceanography and analytical chemistry.
Given that;
Mass of Mg= 0.0549 g
Mass of the sample = 110.52 g
Amount in PPM = 0.0549 g/110.52 g * 10^6
= 497 ppm
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14.americium- 241 is widely used in smoke detectors. the radiation released by this element ionizes particles that are then detected by a charged particle collector. the half-life of am-241 is 432.2 years, and it decays by emitting alpha particles. how many alpha particles are emitted each second by a 5.00 g sample of am-241
Hence, 5.1 * 10^-11 alpha particles is being emitted each second by the sample.
What is half life?The term half life is the time taken for only half of the original amount of radioactive nuclides to remain.
Thus, we have that the half life is 432.2 years or 1.36 * 10^10 s.
k = 0.693/ 1.36 * 10^10 s
k = 5.1 * 10^-11 alpha particles per second.
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Express this number in scientific notation.
31,000,000,000
Answer:
3.1 x 10^10
Explanation:
there are 9 zeroes, so the quick way is too just add a one to the 9 and you get 10, so that is your power.
Which volume of ethane gas, in cm3 , will produce 40cm3 of carbon dioxide gas when mixed with 140cm3 of oxygen gas, assuming the reaction goes to completion
The volume of ethane gas, C₂H₆ in cm³ that will react to produce 40 cm³ of CO₂ is 20 cm³
Balanced equation2C₂H₆ + 7O₂ —> 4CO₂ + 6H₂O
From the balanced equation above,
4 cm³ of CO₂ were obtained from 2 cm³ of C₂H₆
How to determine the volume of C₂H₆ neededFrom the balanced equation above,
4 cm³ of CO₂ were obtained from 2 cm³ of C₂H₆
Therefore,
40 cm³ of CO₂ will be obtain from = (40 × 2) / 4 = 20 cm³ of C₂H₆
Thus, 20 cm³ of C₂H₆ are required for the reaction.
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The chart above shows the relationship between the first ionization energy and the increase in atomic number. The letter on the chart for the alkali family of elements is
A. W
B. X
C. Z
D. Y