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DanielleElmas [232]
3 years ago
9

What is the volume of 0.20 moles of helium at STP?

Chemistry
1 answer:
SOVA2 [1]3 years ago
7 0

Answer:

Option (C) 4.5 liters

Explanation:

1mole of a gas occupy 22.4L at stp.

This implies that 1mole of He also occupy 22.4L at stp.

From the question given, we were asked to find the volume occupied by 0.20 mole of He at STP. This can be achieved by doing the following:

1mole of He occupied 22.4L.

Therefore, 0.2mol of He will occupy = 0.2 x 22.4L = 4.48 = 4.5L

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C. Gas

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The number of protons in a neutral atom is balanced by an equal number of
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Some commercially available algaecides for swimming pools claim to contain 7% copper. Could the method used in this experiment t
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3 years ago
-You wish to make a 0.203 M hydrochloric acid solution from a stock solution of 6.00 M hydrochloric acid. How much concentrated
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For all three questions, we will use the fact that

  • molarity = (moles of solute)/(liters of solution)

1) For 175 mL of solution at 0.203 M, this means that:

  • 0.203 = (moles of solute)/0.175
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Considering the hydrochloric acid solution, if we have 0.035523 mol, then:

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<u />

2) If there is 20.3 mL = 0.0203 L, then:

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This means that the molarity of the diluted solution is:

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3) If we need 1.50 L of 0.700 M solution, then:

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