1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
lorasvet [3.4K]
3 years ago
15

How many moles are contained in 2.0 L of N2 at standard temperature and pressure.

Chemistry
1 answer:
GuDViN [60]3 years ago
6 0

0.091 moles are contained in 2.0 L of N2 at standard temperature and pressure.

Explanation:

Data given:

volume of the nitrogen gas = 2 litres

Standard temperature = 273 K

Standard pressure = 1 atm

number of moles =?

R (gas constant) = 0.08201 L atm/mole K

Assuming nitrogen to be an ideal gas at STP, we will use Ideal Gas law

PV = nRT

rearranging the  equation to calculate number of moles:

PV = nRT

n = \frac{PV}{RT}

putting the values in the equation:

n = \frac{1X2}{0.08201 X 273}

n = 0.091 moles

0.091 moles of nitrogen gas is contained in a container at STP.

You might be interested in
Assume that all of this fossil fuel is in the form of octane (C8H18) and calculate how much CO2 in kilograms is produced by worl
AnnZ [28]

The given question is incomplete. the complete question is:

The world burns the fossil fuel equivalent of approximately 9.50\times 10^{12} kg of petroleum per year. Assume that all of this petroleum is in the form of octane. Calculate how much CO2 in kilograms is produced by world fossil fuel combustion per year.( Hint: Begin by writing a balanced equation for the combustion of octane.)

Answer: 29\times 10^{12}kg

Explanation:

Combustion is a chemical reaction in which hydrocarbons are burnt in the presence of oxygen to give carbon dioxide and water.

According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side. Thus chemical equations are balanced.

2_C8H_{18}+17O_2\rightarrow 16CO_2+18H_2O

To calculate the moles :

\text{Moles of solute}=\frac{\text{given mass}}{\text{Molar Mass}}    

\text{Moles of octane}=\frac{9.50\times 10^{12}\times 10^3g}{114g/mol}=0.083\times 10^{15}moles

According to stoichiometry :

As 2 moles of octane give = 16 moles of CO_2

Thus 0.083\times 10^{15}moles of octane give =\frac{16}{2}\times 0.083\times 10^{15}=0.664\times 10^{15}moles  of CO_2

Mass of CO_2=moles\times {\text {Molar mass}}=0.664\times 10^{15}moles\times 44g/mol=29.2\times 10^{15}g=29.2\times 10^{12}kg

Thus 29\times 10^{12}kg of CO_2 is produced by world fossil fuel combustion per year.

5 0
3 years ago
What is the density (g/L) of 5.0 moles of NH3, at 1.18 atm and 25.0°C?
Goryan [66]
The answer will be 4667C
5 0
1 year ago
Read 2 more answers
100 points!!!!!!!!!!!!!!!!!! how does a volcanic eruption benefit the surrounding area? A. Lava and ash bury animal habitats. B.
Shkiper50 [21]
I think it would be C) The surrounding soil can become very fertile

4 0
3 years ago
Read 2 more answers
Compound A reacts with Compound B to form only one product, Compound C, and it's known the usual percent yield of C in this reac
frez [133]

Given :

Compound A reacts with Compound B to form only one product, Compound C.

The usual percent yield of C in this reaction is 40%.

10.0 g of A are reacted with excess Compound B, and 6.4 g of Compound C

To Find :

The theoretical yield of C.

Solution :

We know, % yield is given by :

\%\ yield = \dfrac{actual\ yield}{theoretical\ yield }\times 100

Putting given values , we get :

40 = \dfrac{6.4}{theoretical\ yield }\times 100\\\\theoretical\ yield=\dfrac{6.4\times 100}{40}\\\\theoretical\ yield=16\ g

Therefore, theoretical yield of C is 16 g.

Hence, this is the required solution.

7 0
3 years ago
What is the name of KMnO3???
bonufazy [111]
The answer is potassium magnate
4 0
3 years ago
Other questions:
  • Consider the following reaction. The system is allowed to reach an equilibrium and then FeS2(s) is added. What will happen if Fe
    10·1 answer
  • Which is a radical? <br><br>A. O<br>B. H<br>C. OH<br>D. H2O​
    14·1 answer
  • What is the smallest particle of an element that has the chemical properties of that element
    10·1 answer
  • When ethanol is burned, it's converted into carbon dioxide and water. Does the ethanol undergo a physical change or a chemical c
    11·1 answer
  • A 20 N force is applied to an object with a mass of 100 kg. What is the
    5·2 answers
  • Which of the following atoms releases more energy than oxygen when an electron is added to its valence energy level?
    14·1 answer
  • Of the following metals, which ions are most easily reduced? Use the following table to answer the question.
    9·1 answer
  • If you had 15 moles of Oxygen (O2), how many moles of water (H2O) would you be able to make?
    8·1 answer
  • How much energy is required to completely vaporize 250 grams of liquid water that is already at 100 degrees Celsius? Show your w
    12·1 answer
  • Charlie is frying an egg in a pan located over a gas burner. He develops a model to determine the energy produced by the flame i
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!