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Ugo [173]
3 years ago
8

A balloon is filled with 3.8 l of helium gas at stp. approximately how many moles of helium are contained in the balloon?

Chemistry
2 answers:
love history [14]3 years ago
7 0
Hope this helps you.

Lelechka [254]3 years ago
3 0

Answer:

0.16964 moles ≈ 0.17 moles

Explanation:

At STP, one mole of a gas has a volume of 22.4 L.

1 mole = 22.4L

x mole = 3.8L

x =  ( 3.8 * 1 ) / 22.4

x = 3.8 / 22.4

x = 0.16964 moles ≈ 0.17 moles

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Explanation:

The data given on the iridium 182 are;

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The amount left, N(t) after two half lives is given as follows;

N(t) = N_0 \left (\dfrac{1}{2} \right )^{\dfrac{t}{t_{1/2}} }

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