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ZanzabumX [31]
2 years ago
7

You are taking a scuba diving training course. The instructor is discussing

Chemistry
2 answers:
IgorC [24]2 years ago
7 0

Answer:

C

Explanation:

The deeper you go into water, the greater pressure there is on everything. This compresses the air inside and causes the volume to shrink.

Sometimes air is measured in bars. Let's assume the Earth's surface pressure is 1. Let's also say that your lungs have 5.5L and the tank has 11L. That's only 2 breathes, but under 200 bars of pressure deep in the ocean? That's 200 x 11, which equals 2200L. That's about 400 breathes.

In addition, if making liters out of thin air doesn't make any sense, there's an alternative where you divide your liters per breath by the bar pressure. So instead of 200 x 11, you can take your 5.5 from your lungs and divide it by 200. That small number, in this case, 0.0275, can serve as how much air you breath deep in the ocean.

dusya [7]2 years ago
5 0
Ur answer would’ve u have too many questions
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Calculate the grams of ethane present in a sample containing 0.4271 moles if the molar mass of ethane is 30.067 g/mol.
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The grams of ethane present in a sample containing 0.4271 mole is 12.84 g

<h3>Description of mole </h3>

The mole of a substance is related to it's mass and molar mass according to the following equation

Mole = mass / molar mass

With the above formula, we can obtain the mass of ethane. Details below

<h3>How to determine the mass of ethane</h3>

The following data were obtained from the question:

  • Mole of ethane = 0.4271 mole
  • Molar mass of ethane = 30.067 g/mol
  • Mass of ethane =?

The mass of ethane present in the sample can be obtained as follow:

Mole = mass / molar mass

Cross multiply

Mass = mole × molar mass

Mass of ethane = 0.4271 × 30.067

Mass of ethane = 12.84 g

Learn more about mole:

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