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
zvonat [6]
3 years ago
8

At standard temperature and pressure, what volume does 0.5 mol of CO2 occupyAt standard temperature and pressure, what volume do

es 0.5 mol of CO2 occupy?
A. 560 L

B. 0.57 L

C. 11.2 L

D. 39.4 L
Chemistry
1 answer:
Zigmanuir [339]3 years ago
4 0
<span>C. 11.2 L There are several different ways to solve this problem. You can look up the density of CO2 at STP and work from there with the molar mass of CO2, but the easiest is to assume that CO2 is an ideal gas and use the ideal gas properties. The key property is that a mole of an idea gas occupies 22.413962 liters. And since you have 0.5 moles, the gas you have will occupy half the volume which is 22.413962 * 0.5 = 11.20698 liters. And of the available choices, option "C. 11.2 L" is the closest match. Note: The figure of 22.413962 l/mole is using the pre 1982 definition of STP which is a temperature of 273.15 K and a pressure of 1 atmosphere (1.01325 x 10^5 pascals). Since 1982, the definition of STP has changed to a temperature of 273.15 K and a pressure of exactly 10^5 pascals. Because of this lower pressure, one mole of an ideal gas will have the higher volume of 22.710947 liters instead of the older value of 22.413962 liters.</span>
You might be interested in
Oxygen gas, generated by the reaction 2KClO3(s)---2KCl(s)+3O2(g), is collected over water at 27•C in 3.72L vassel at a total pre
Julli [10]

Answer:

moles = 0.093 moles

Explanation:

In this case, we know that this reaction is taking plave in a vessel that has a 730 torr of total pressure.

The total pressure is a value obtained by:

Pt = Pwater + PO2

We need to know the pressure of O2, because then, with stoichiometry, we can calculate the moles of KClO3

The pressure of oxygen is:

PO2 = 730 - 26 = 704 Torr

Now, this pressure is in Torr, and we need to convert it to Atm, so:

704 Torr / 760 Torr = 0.9263 atm

Now, let's use the ideal gas equation:

PV = nRT

With this expression, we will calculate the moles of O2, and then, the moles of KClO3:

n = PV/RT

R = 0.082 L atm /K mol

P = 0.9263 atm

V = 3.72 L

T = 27 + 273 = 300 K

Replacing the data:

n = 0.9263 * 3.72 / 300 * 0.082

n = 0.14 moles

Finally, by stoichiometry, we know that 2 moles of KClO3 produces 3 moles of O2, so:

moles of KClO3 = 0.14 * 2/3 = 0.093 moles of KClO3

6 0
2 years ago
Mark the statement as true or false All of the proposed ideas by Dalton, Thompson, and Rutherford are still used in the modern t
kvv77 [185]

False

Although we use many of their ideas to describe atoms today, such as the existence of a tiny, dense nucleus in an atom (proposed by Rutherford), or the notion that all atoms of an element are identical (proposed by Dalton), some of their ideas have been rejected by the modern theory of the atom.

For example, Thompson came up with the plum pudding model to describe an atom, which resembled a sphere of positive charge with electrons embedded in it. We know now, however, that atoms are mostly empty space with a tiny, dense nucleus.

Another example is Dalton's atomic theory, which stated that atoms are indivisible particles. However, this was disproved by the discovery of subatomic particles.

4 0
3 years ago
Read 2 more answers
What is the definition of a chemical bond?
sweet-ann [11.9K]

Answer:

B- A mutual attraction between the nuclei and the electrons in two different atoms

4 0
2 years ago
How do you convert <br> 95gFe= molFe
frosja888 [35]

Answer:

is it some kind of code??...........

7 0
2 years ago
PLEASE HELP ME AS SOON AS POSSIBLE!!! I'LL GIVE U BRAINIEST!!!
FromTheMoon [43]
D have the same opinion on the contain resisting
5 0
3 years ago
Other questions:
  • What are the three different types of selective breeding
    10·1 answer
  • A jar containing only nickels and dimes contains a total of 60 coins. the value of all the coins in the jar is $4.45. solve by e
    7·1 answer
  • In the reaction ca + f2 caf2 , what should be the coefficient for f2?
    8·1 answer
  • Accuracy vs. Precision
    9·2 answers
  • Which matter particle has 34 protons and 36 electrons in the following configuration : 1s^ 2 2s^ 2 2p^ 6 3s^ 2 3p^ 6 4s^ 2 4p^ 5
    13·1 answer
  • Select the correct coefficients to balance the reaction given below.<br> __Al + ___O₂ → ____ Al₂ O₃
    11·1 answer
  • How many oxygen atoms are present in 2.35 Mol of calcium phosphate?​
    8·1 answer
  • Given the balanced equation representing a
    6·1 answer
  • Calculate the percent covalent character of a chemical bond between iodine and lithium.
    10·1 answer
  • Nts
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!