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
RSB [31]
3 years ago
11

Which of the following has a mass of 10.0 g?

Chemistry
1 answer:
Serjik [45]3 years ago
5 0

Answer:

a.  0.119mol Kr

Explanation:

To solve this problem, we must understand that;

     Mass  = number of moles x molar mass

Molar mass of Kr  = 83.3g/mol

                        Ar = 40g/mol

                        He = 4g/mol

                        Ne = 20.18g/mol

a0.119 mol Kr               mass  = 0.119 x 83.3 = 9.9g

b 0.400 mol Ar             mass  = 0.4 x 40  = 16g

C 1.25 mol He               mass  = 1.25 x 4  = 5g

d 2.02 mol Ne              mass  = 2.02 x 20.18  = 40.8

Krypton is the answer

You might be interested in
If 1.20 moles of an ideal gas occupy a volume of 18.2 l at a pressure of 1.80 atm, what is the temperature of the gas, in degree
scoundrel [369]

We can calculate for temperature by assuming the equation for ideal gas law:

P V = n R T

Where,

P = pressure = 1.80 atm

V = volume = 18.2 L

n = number of moles = 1.20 moles

R = gas constant = 0.08205746 L atm / mol K

Substituting to the given equation:

T = P V / n R

T = (1.8 atm * 18.2 L) / (1.2 moles * 0.08205746 L atm / mol K)

T = 332.70 K

We can convert K unit to ˚C unit by subtracting 273.15 to Kelvin, therefore

T = 59.55 ˚<span>C</span>

6 0
4 years ago
13 This word describes the circulatory system that provides nutrients and oxygen to living cells of the body.
Nina [5.8K]

Answer: Cardiovascular System

Explanation:

This involves your heart, blood, veins, and arteries

4 0
3 years ago
How can one describe the bond between the two atoms of hydrogen to the one atom of oxygen within a molecule of water (h2o)?
Digiron [165]

There are O-H bonds in H2O. They have the intramolecular force of polar covalent bond.

4 0
4 years ago
over the last 100 years the number of lives lost during major storms like hurricanes has steadily dropped what could be conclude
Irina18 [472]
People have learnt to make shelters in a way so that they don't get affected by natural disasters that are common in their area. For example, people make houses of complete brick so they are stronger and can withstand a powerful storm
4 0
3 years ago
N writing a chemical equation that produces hydrogen gas, the correct representation of hydrogen gas is
andrezito [222]
Need more information
4 0
3 years ago
Other questions:
  • Name four products of incomplete combustion<br><br> One :<br> Two :<br> Three :<br> Four :
    5·1 answer
  • Which statements correctly describe compounds? Check all that apply.
    11·2 answers
  • The electrons move around the nucleus in regions know as electron shells, is the statement true or false, if false, rewrite the
    11·1 answer
  • A lab assistant reacts ammonia and nitric acid what is the percent yield
    9·1 answer
  • Determine if the phrases describe a solid, liquid, or gas.
    13·2 answers
  • Jose’s lab partner gives him a solution of sodium phosphate that is buffered to a ph 4. Because of an error that he made while c
    15·2 answers
  • 1. What role do you think popular belief has on scientific discoveries?
    9·2 answers
  • State the purpose of Watson and crick DNA structure experiment
    15·1 answer
  • Magnesium reacts with sodium fluoride to produce sodiunfluoride and elemental sodium.
    14·1 answer
  • What do the digestive system and skeletal system have in common?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!