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AVprozaik [17]
2 years ago
10

I have a question can someone answer these questions for me please?

Chemistry
1 answer:
Kitty [74]2 years ago
8 0
1. C
2. E
3. A
4. B
5. D
I hope that helps <3
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Under identical conditions, separate samples of O2 and an unknown gas were allowed to effuse through identical membranes simulta
Vilka [71]

Answer:

147.2g

Explanation:

The full solution can be found in the image attached. Graham's law was applied to the problem. The rate of diffusion of a gas is inversely proportional to its molar mass or vapour density. Molar mass= 2vapour density

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3 years ago
Predict the type of substitution mechanism predict which reaction of the pair will occur at a faster rate
Diano4ka-milaya [45]
You put in a variable to substitute the unknown number.
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3 years ago
The concentration of carbon monoxide (CO), a common air pollutant, is found in a room to be 5.7 x 10^-3 mg/cm^3. How many grams
damaskus [11]

The amount, in mg, of CO present in the room will be 191,520 mg.

<h3>Stoichiometric problem</h3>

The concentration of the gas in the room is 5.7 x 10^{-3} mg/cm3.

The dimension of the room is 3.5 m x 3.0 m x 3.2 m. This is equivalent to 350 cm x 300 cm x 320 cm.

We can obtain the volume of the room as:

                  350 x 300 x 320 = 33,600,000 cm3

The concentration is in mg/cm3, meaning that it is mass/volume.

Thus:

 mass = concentration x volume = 5.7 x 10^{-3} mg/cm3 x 33,600,000 cm3

                         = 191,520 mg

The mass of CO in the room is 191,520 mg

More on stoichiometric problems can be found here: brainly.com/question/14465605

#SPJ1

5 0
1 year ago
Minerals in igneous rocks that form from lava are large because lava cools slowly.
natulia [17]

Answer:

They is called heat.

Explanation:

8 0
3 years ago
What happened as a result of people being able to trade and purchase food from other people?
Rashid [163]

D.There were large food shortages.

As a result of people being able to trade and purchase food from other people.

Explanation:

  • From the following options, The people who were able to trad and purchase food from other people could be because of large food shortages.
  • People started buying from each other to fulfill their basic food necessities.
  • There is also a possibility where people have more stock to be sold.
7 0
3 years ago
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