Answer:
The answer to your question is given below
Explanation:
We'll begin by converting 500 cm³ to L. This can be obtained as follow:
1000 cm³ = 1 L
Therefore,
500 cm³ = 500 cm³× 1 L / 1000 cm³
500 cm³ = 0.5 L
Next, we shall determine the number of mole of Na₂CO₃ in the solution. This can be obtained as follow:
Volume = 0.5 L
Molarity = 2 M
Mole of Na₂CO₃ =?
Molarity = mole /Volume
2 = Mole of Na₂CO₃ / 0.5
Cross multiply
Mole of Na₂CO₃ = 2 × 0.5
Mole of Na₂CO₃ = 1 mole
Finally, we shall determine the mass of 1 mole of Na₂CO₃. This can be obtained as follow:
Mole of Na₂CO₃ = 1 mole
Molar mass of Na₂CO₃ = (23×2) + 12 + (16×3)
= 46 + 12 + 48
= 106 g/mol
Mass of Na₂CO₃ =?
Mass = mole × molar mass
Mass of Na₂CO₃ = 1 × 106
Mass of Na₂CO₃ = 106 g
Thus, to prepare the solution, weigh 106 g of Na₂CO₃ and dissolve in 500 cm³ (i.e 0.5 L) of water.
How many atoms are in 56 grams of silicon?
Answer:
[tex]atoms=1.2x10^{24}atomsSi[/tex]
Explanation:
Hello there!
In this case, by considering the mass-mole-particles relationships, it is possible to compute the atoms of silicon by firstly computing the moles via its atomic mass (28.1 g/mol):
[tex]mol=56gSi*\frac{1molSi}{28.1gSi} =2.0molSi[/tex]
Next, via the Avogadro's number, we can compute the atoms of silicon:
[tex]atoms=2.0gSi*\frac{6.022x10^{23}atomsSi}{1molSi}\\\\atoms=1.2x10^{24}atomsSi[/tex]
Best regards!
A student pours 800.0 mL of a 3.000 molar solution of sodium hydroxide into a 2.00 liter volumetric flask and fills the flask up with water. What is the new molarity of the solution?
5 points
12.00 M
1.20 M
14.00 M
0.0750 M
consider the following atoms and ion: Cl,Mg,P,K,Ce =
A)which one is an example of ns² family?
B)which one is an example of p-block element?
C) which is (are) isoelectronic with Argon?
D) Which one is an example of alkaline earth metal?
E) which one has core configuration [Ne]3s²?
F) which one is an example of f-block element?
G) which one is d-block element?
H) which one has outer shell configuration of ns²p³?
Answer:it would be f
Explanation:
Explain how one would sort an element according to the properties of a metal, a metalloid, or a nonmetal.
The molecular weight for this compound is 60.09 g/mol. What is the molecular formula for this compound?
Answer:
i i cant help youu withh thatt srry i i juss dont knoww whatt to say !!!!! GO TO SOCRATICCC ..!!!!!!!!!!!!!$$!$!
structure of 2,3-dimethylheptane
Answer:
Please find the structure of the hydrocarbon in the attachment section and details on how to draw it in the explanation section.
Explanation:
Heptane is a member of the alkane group, which has a general formula of CnH2n+2. If n in heptane is 7, this means that the chemical formula for heptane will be C7H16 i.e.
= C7H2(7) + 2
= C7H14+2
= C7H16
C7H16 is the chemical formula for heptane, which is a linear hydrocarbon with 7 carbon atoms and 16 hydrogen atoms. However, in the name of the hydrocarbon compound given in the question: 2,3-dimethylheptane;
- Two methyl groups (CH3) has a substituted two hydrogen atoms specifically at carbon 2 and 3 respectively. Therefore, the new chemical formula of 2,3-dimethylheptane will be: C7H14(CH3)2
Please find the structural formula of the compound; 2,3-dimethylheptane as an attachment.
I need help with this
Answer:
1. D.
2. G.
3. F.
4. E.
5. J.
6. I.
7. C.
8. H.
9. A.
10. B.
Explanation:
Answer:
1D
2G
3F
4E
5J
6I
7C
8H
9A
10B
Explanation:
1D
2G
3F
4E
5J
6I
7C
8H
9A
10B
2.54 mL of ethanol to mol ethanol
If you are given 64.0 grams of CH4, how many grams of H2O are made
Answer:
144 g of H₂O.
Explanation:
We'll begin by writing the balanced equation for the reaction. This is given below:
CH₄ + 2O₂ —> CO₂ + 2H₂O
Next, we shall determine the mass of CH₄ that reacted and the mass of H₂O produced from the balanced equation. This can be obtained as follow:
Molar mass of CH₄ = 12 + (4×1)
= 12 + 4 = 16 g/mol
Mass of CH₄ from the balanced equation = 1 × 16 = 16 g
Molar mass of H₂O = (2×1) + 16
= 2 + 16 = 18 g/mol
Mass of H₂O from the balanced equation = 2 × 18 = 36 g
SUMMARY:
From the balanced equation above,
16 g of CH₄ reacted to produce 36 g of H₂O.
Finally, we shall determine the mass of H₂O produced by the reaction of 64 g of CH₄. This can be obtained as follow:
From the balanced equation above,
16 g of CH₄ reacted to produce 36 g of H₂O.
Therefore, 64 g of CH₄ will react to produce = (64 × 36)/16 = 144 g of H₂O.
Thus, 144 g of H₂O were obtained from the reaction.
If H2O is removed from this reaction, what will happen? 2H2 + O2 + 2H20 O A. The product-favored reaction will stop. B. The reactants will react to produce more H2O. C. The equilibrium will not change. D. The reaction will be reactant-favored.
Answer:
B. The reactants will react to produce more H₂O
Explanation:
Given the reaction
2H₂+O₂→2H₂O
A decrease in the amount of H₂O will cause the reaction to produce more H₂O. When you change something, the reaction seeks to undo that change.
A 20.06-mL sample of hydrochloric acid solution requires 25.00 mL of 0.149 M sodium hydroxide for complete neutralization. What is the concentration of the original hydrochloric acid solution?
Answer:
The concentration of the original hydrochloric acid solution is - 0.1856 M
Explanation:
Lets calculate-:
Neutralization reaction follows dilute principle
[tex](N_1)(V_1)=(N_2)(V_2)[/tex] For titration between NaOH and HCl
[tex](M_1)(V_1)_H_C_l=(M_2)(V_2)_N_a_O_H[/tex]
Putting the given values ,
[tex]M_1\times 20.06ml=0.149M\times25.0ml[/tex]
[tex]M_1_H_C_l=\frac{0.149\times25.0}{20.06}[/tex]
= 0.1856 M
Hence , the concentration of hydrochloric acid solution is 0.1856 M.
The distance that is covered by the wave in one second is called
Answer:
The distance that is covered by the wave in one second is called frequency.
Explanation:
Determine the number of moles of air present in 1.35 L at 750 torr and 17.0°C. Which equation should you use? P equals StartFraction n R T over V EndFraction. n equals StartFraction R T over P V EndFraction. n equals StartFraction P V over R T EndFraction.
Answer:
0.056 moles air
Explanation:
P·V = n·R·T => n = P·V/R·T
P = 750 Torr = 750 mmHg = (750mm/760mm/atm) = 0.9868 Atm
V = 1.35 Liters
R = 0.08206 L·atm/mole·K
T = 17°C = (17 + 273) K = 290K
n = (0.9868atm)(1.35L)/(0.08206L·atm/mole·K)(290K) = 0.056 moles air
Answer:
first part is C
.056 moles
third part is B
Last is 932ml
Explanation:
plz help me with this question
Cars rust because when metal comes into contact with water or some sort of water form, it will make the surface wet. If the metal is wet for too long, it will start to soak up the water, therefore making it rusty. The salt will also rust a car. It does this because the mix of carbon dioxide and oxygen in the salt will eat away at the car, making it rust faster. Hope this helps!
It’s worth 50 points! Please help!
Answer:
1) NO2
2) 49.4%
Explanation:
why pie bond are not perticipate in hybridaization
Janet runs 6.4 miles in one hour. Is it speed or velocity or acceleration
Answer:
acceleration
Explanation:
Methane reacts with chlorine to produce methyl chloride and hydrogen chloride. Once formed, the methyl chloride may undergo further chlorination to form methylene chloride (CH2Cl2), chloroform, and carbon tetrachloride. A methyl chloride production process consists of a reactor, a condenser, a distillation column, and an absorption column. A gas stream containing 80.0 mole% methane and the balance chlorine is fed to the reactor. In the reactor a single-pass chlorine conversion of essentially 100% is attained, the mole ratio of methyl chloride to methylene chloride in the product is 5:1, and negligible amounts of chloroform and carbon tetrachloride are formed. The product stream flows to the condenser. Two streams emerge from the condenser: the liquid condensate, which contains essentially all of the methyl chloride and methylene chloride in the reactor effluent, and a gas containing the methane and hydrogen chloride. The condensate goes to the distillation column in which the two component species are separated. The gas leaving the condenser flows to the absorption column where it contacts an aqueous solution. The solution absorbs essentially all of the HCl and none of the CH4CH4 in the feed. The liquid leaving the absorber is pumped elsewhere in the plant for further processing, and the methane is recycled to join the fresh feed to the process (a mixture of methane and chlorine). The combined stream is the feed to the reactor.
Required:
a. Choose a quantity of the reactor feed as a basis of calculation, draw and label a flowchart, and determine the degrees of freedom for the overall process and each single unit and stream mixing point. Then write in order the equations you would use to calculate the molar flow rate and molar composition of the fresh feed, the rate at which HCl must be removed in the absorber, the methyl chloride production rate, and the molar flow rate of the recycle stream. Do no calculations.
b. Calculate the quantities specified in Part (a), either manually or with an equation-solving program.
c. What molar flow rates and compositions of the fresh feed and the recycle stream are required to achieve a methyl chloride production rate of 1000 kg/h?
An empty graduated cylinder has a mass of 42.91 g. When filled with 40.00 mL of an unknown liquid, it has a mass of 103.26 g. Calculate the density of the unknown liquidz
Answer:
1.511g/mL
Explanation:
To find density, we can use the equation
[tex]d=\frac{m}{V}[/tex]
We have V (40mL) To find m (mass), we must subtract as such:
[tex]103.36-42.91=60.45[/tex]
60.45 grams is the mass of the unknown liquid.
Now, we plug the values we have into the density equation.
[tex]d=\frac{60.45g}{40.00mL} \\\\ d=1.511\frac{g}{mL}[/tex]
The density of the unknown liquid is 1.51 g/mL
Density can be defined as the mass of an object per unit volume of the object.
[tex]Density = \frac{mass}{volume}[/tex]
To solve the question given above, we'll begin by calculating the mass of the unknown liquid. This can be obtained as follow:
Mass of empty cylinder = 42.91 g
Cylinder + unknown liquid = 103.26 g
Mass of unknown liquid =?Mass of unknown liquid = (Cylinder + unknown liquid) – (Mass of empty cylinder)
Mass of unknown liquid = 103.26 – 42.91
Mass of unknown liquid = 60.35 gFinally, we shall determine the density of the unknown liquid. This can be obtained as follow:
Mass of unknown liquid = 60.35 g
Volume of unknown liquid = 40 mL
Density of unknown liquid =?Density = mass / volume
Density = 60.35 / 40
Density of unknown liquid = 1.51 g/mLTherefore, the density of the unknown liquid is 1.51 g/mL
Learn more: https://brainly.com/question/17262276
The reaction of hypochlorite ion with iodide ion in 1 M aqueous hydroxide solution
OCl- + I- OI- + Cl-
is first order in OCl- and first order in I-.
Complete the rate law for this reaction in the box below.
Use the form k(A)m(B)n..., where '1' is understood for m, n ... (don't enter 1) and concentrations taken to the zero power do not appear.
Rate = k(OCl)-(I)
In an experiment to determine the rate law, the rate constant was determined to be 78.6 M-1s-1. Using this value for the rate constant, the rate of the reaction when
(OCl−)=1.14×10−3 M and (I)]=2.64×10^−3
Answer: The rate of the reaction is [tex]2.36\times 10^{-4}Ms^{-1}[/tex]
Explanation:
Rate law says that rate of a reaction is directly proportional to the concentration of the reactants each raised to a stoichiometric coefficient determined experimentally called as order.
[tex]OCl^-+I^-\rightarrow OI^-+Cl^-[/tex]
[tex]Rate=k[OCl^-]^m[I^-]^n[/tex]
where m = n = 1
[tex]Rate=78.6M^{-1}s^{-1}\times [1.14\times 10^{-3}M]^1\times [2.64\times 10^{-3}M]^1=2.36\times 10^{-4}Ms^{-1}[/tex]
The rate of the reaction is [tex]2.36\times 10^{-4}Ms^{-1}[/tex]
I have a TPO set on me should I disobey it and go see my girl and express my love to her ?
Answer:
i have no idea what a TPO is but you should definitly tell her, be yourself, let all your love 4 her flood out!
The atomic radius _________________ down a group. Explain why
How are ocean waves formed? gravity energy transfer conduction radiation
Answer:
I apologize that I'm late and all But your answer is B. Energy Transfer.
Explanation:
The waves transfer energy to the sand for example.
Conduction is the transfer of energy by the movement of currents. ture or false
conduction is the transfer of energy by the movement of currents(it is true)
Answer:
false
Explanation: Its actually Convection
Using the following equation:
2 NaOH + H2SO4 à 2 H2O + Na2SO4
How many grams of sodium sulfate will be formed if you start with 200 grams of sodium hydroxide and you have an excess of sulfuric acid?
What does conclusion mean? Don’t get it from Googl I don’t understand the language! :)
Answer: A conclusion is the end of a statement or story that is highly descriptive to sum up the statement or story.
Rank the following carboxylic acids by acid strength, with the strongest at the top and the weakest at the bottom. It may help to draw each Lewis structure. Drag and drop options into correct order.For keyboard navigation...SHOW MORE Press space or enter to grab A. CF3CO2H B. CHF2CO2HC. CH2FCO2H D. CH3CO2H
Answer:
[tex]$CF_3CO_2H> CHF_2CO_2H>CH_2FCO_2H>CH_3CO_2H$[/tex]
Explanation:
Florine has the highest electronegativity and it thus pulls the element of [tex]$OH^-[/tex] groups in the COOH group towards itself, making it relatively easy to loose the proton of the carboxyl group.
F O
↑ ||
F← C ← C ← O - H , Here three Florine withdraw
↓
F
F O
↑ ||
F← C ← C - O H , Here two Florine withdraw
↓
H
F O
| ||
H - C - C - OH , Here one Florine withdraw
↓
H
H O
| ||
H - C - C - OH , Here no Florine withdraw
|
H
Those substances which release H+ ion when mixed in the solution is called acid.
The strength of the acid depends on the following:-
Concentration of H+
The lewis structure state and define the number of electrons in the outermost shell of the electrons and help us to find the valency.
According to the question, we have to find the weakest carboxylic acid. Therefore the sequence are in increasing order and it is as follows:-
[tex]CF_3Co_2H[/tex]>[tex]CHF_2CO_2H[/tex]>[tex]CH_2FCO_2H>CH_3CO_2H[/tex]
This is the increasing order of the compounds.
For more information, refer to the link:-
https://brainly.com/question/15804584
Explain why water and syrup are able to mix?
To be considered a true mineral,
what state of matter must be
present?
What causes pressure inside a bicycle tire ?
Answer:
Enclosed gas.
Explanation: