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
diamong [38]
2 years ago
9

A gas effuses 4.0 times faster than oxygen (o2). what is the molecular mass of the gas? 1.0 g/mol 1.0 g/mol 2.0 g/mol 2.0 g/mol

4.0 g/mol 4.0 g/mol 7.67 g/mol
Chemistry
1 answer:
Anastaziya [24]2 years ago
5 0

Answer:

32(molecular mass has no unit )

Explanation:

(16)(o2)

16×2

=32

You might be interested in
What is the mass of 22.4 L of H2O at STP?
Andrew [12]
Answer is: <span>A. 18.02 g/mol.

At standard temperature and pressure 1 mol of gas occupied 22.4 liters:
V(H</span>₂O) = 22.4 L; volume of water.
Vm = 22.4 L/mol; molar volume at STP.
n(H₂O) = V ÷ Vm.
n(H₂O) = 22.4 L ÷ 22.4 L/mol.
n(H₂O) = 1 mol; amount of substance (water).
M(H₂O) = Ar(O) + 2Ar(H) · g/mol.
M(H₂O) = 16 + 2 ·1.01 · g/mol.
M(H₂O) = 18.02 g/mol; molar mass of water.
3 0
3 years ago
How do isobars help meteorologists predict weather?
asambeis [7]
The answer will be (B)
7 0
3 years ago
Read 2 more answers
Match the statements with the atmospheric layer they describe.
vekshin1

The correct matches are:

1. Exosphere - Temperatures reach as high as 2000 C yet it feels very cold

This is the top layer of the atmosphere. The atoms are so dispersed that despite it having very high temperature it doesn't feel like it at all.

2. Thermosphere - Particles that have enough energy can escape into space

The thermosphere is the fourth highest layer of the atmosphere. The atoms in this layer are relatively distant from one another, so the particles that have enough energy manage to escape easily into the exosphere and then the space.

3. Mesosphere - It is the coldest region of the atmosphere

The mesosphere is the third highest layer. In this layer the temperatures constantly drop, and they go down to -85 degrees, making it the coldest layer by far.

4. Stratosphere - Ninety percent ozone is in this layer

The startosphere has a separte zone in it which is dominated by only one gas, the ozone. It is called the ozone layer, the one that protects the Earth from too intense UV radiation, and in fact over 90% of this gas is locate here.

5. Troposphere - It is warm due to the heat from Earth's surface

The troposphere is the densest and lowest of the layers. It is the one that also has Greenhouse gases which manage to trap the heat that is radiated from the surface of the Earth, thus keeping this layer relatively warm.

6 0
3 years ago
Read 2 more answers
What are the uses of an enema? Select all that apply. what are the uses of an enema? select all that apply. ?
shutvik [7]

An enema administration is a technique used to stimulate stool evacuation The process helps push waste out of the rectum when you cannot do so on your own

7 0
3 years ago
What is the electron structure of a sodium atom?
nordsb [41]

Answer:

1s22s22p63s1 is the electronic configuration of sodium.

Explanation:

7 0
3 years ago
Read 2 more answers
Other questions:
  • Is heat being released or absorbed physical or chemical changes
    9·2 answers
  • Which of the statements describes a chemical property?
    10·1 answer
  • Atoms of elements in the same group have the same number of . This is why they have similar chemical properties.
    7·2 answers
  • Which of the following is a balanced chemical equation?
    8·1 answer
  • Electron configuration always starts with the lowest energy electrons.<br> true or false
    8·1 answer
  • If 65.0 mL of 0.150 M HCl ( aq ) is needed to neutralize all the NH 3 ( g ) from a 2.25 g sample of organic material, calculate
    15·1 answer
  • Which expression correctly describes activation energy in a chemical reaction?
    12·1 answer
  • Gravity is responsible for the
    13·1 answer
  • Formation of Water Reaction
    10·2 answers
  • At which point does the water in the waterfall have the greatest gravitational potential energy?
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!