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
bekas [8.4K]
3 years ago
7

Enter your answer in the provided box. On a certain winter day in Utah, the average atmospheric pressure is 718 torr. What is th

e molar density (in mol/L) of the air if the temperature is −29°C?
Chemistry
1 answer:
AnnZ [28]3 years ago
7 0

Answer:

The correct answer is 0.047 mol/L

Explanation:

The atmospheric air is a mixture of gases. We can assume an ideal behavior of the gas and use the ideal gas equation:

PV= nRT

where P is the pressure, V is the volume, n is the number of moles, R is a constant (0.082 L.atm/K.mol) and T is the temperature in K.

We have to first convert the pressure from Torr to atm:

760 Torr= 1 atm

⇒ 718 Torr x 1 atm/760 Torr = 0.945 atm

Then, we convert the temperature from ºC to K:

0ºC = 273 K

⇒ -29ºC+273= 244 K

Finally, we introduce the data in the equation and calculate de densitiy, which is the moles per liters of gas (n/V):

PV = nRT

n/V= P/RT

n/V = (0.945 atm)/(0.082 L.atm/K.mol x 244 K) = 0.047 mol/L

You might be interested in
How many electrons are in their outer shell?
quester [9]
Is there an attachment because it depends on the element.
5 0
3 years ago
An object which allows light to show through it unaltered is called?​
Rainbow [258]
Transparency (also called pellucidity or diaphaneity) in the field of optics is the physical property of allowing light to pass through the material without significant light dispersion.
6 0
3 years ago
What are the starting materials in a chemical reaction called?
Irina18 [472]
A chemical reaction is the process in which atoms present in the starting substances rearrange to give new chemical combinations present in the substances formed by the reaction. These starting substances of a chemical reaction are called the reactants, and the new substances that result are called the products.
8 0
3 years ago
What is the maximum number of moles of Al2O3 that can be produced by the reaction of .4 mol of Al with .4 mol of O2
Darya [45]

<u>Given:</u>

Moles of Al = 0.4

Moles of O2 = 0.4

<u>To determine:</u>

Moles of Al2O3 produced

<u>Explanation:</u>

4Al + 3O2 → 2Al2O3

Based on the reaction stoichiometry:

4 moles of Al produces 2 moles of Al2O3

Therefore, 0.4 moles of Al will produce:

0.4 moles Al * 2 moles Al2O3/4 moles Al = 0.2 moles Al2O3

Similarly;

3 moles O2 produces 2 moles Al2O3

0.4 moles of O2 will yield: 0.4 *2/3 = 0.267 moles

Thus Al will be the limiting reactant.

Ans: Maximum moles of Al2O3 = 0.2 moles

4 0
3 years ago
Read 2 more answers
What are centimeters,kilometers,and millimeters
Stells [14]
They are metric units of measurement.
4 0
3 years ago
Other questions:
  • Owls do most of their hunting during the night and they have specialized cells in their eyes that provide good night vision. The
    10·2 answers
  • Which of the following represents a stable octet? A 1s2 2s2 2p6 3s2 3p6 4s2
    14·1 answer
  • Earth's gravitational potential energy: GPE = mgh = Gravity (9.81m/s2) Mass (kg) x Height (m) Kinetic energy: KE = mu? How do th
    5·1 answer
  • What is the pressure of a sample of gas at a volume of .335 L if it occupies 1700 mL at
    14·1 answer
  • Which two properties apply to most elements that conducts heat: malleable, brittle, highly combustible, has free electrons
    8·1 answer
  • Whats is tge electron configuration of Ag2+ please answer asap..
    11·1 answer
  • How many moles of N 2 make 1.76 moles of NH 3 ? do you need to. Please help me!
    5·1 answer
  • How do chemists model the valence electrons in a metal
    13·1 answer
  • Describe a chemical test for water-
    14·1 answer
  • When a strong acid is titrated with a weak base, the pH at the equivalence point Multiple Choice is greater than 7.0. is equal t
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!