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2 years ago

10

A sample of gas is collected in a flask with a volume of 267 mL at a pressure of 771 mmHg and a temperature of 21C. If the mass

of the gas is 1.05 g, what is the molar mass of the gas?

1 answer:

nadya68 [22]2 years ago

6 0

Answer:

M=93.5g/mol

Explanation:

I did this in class and it was a review. :)

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1. A 50 gram sample of a radioisotope decays to 12.5 grams in 14.4 seconds. What is

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Chlorine can be prepared in the laboratory by the reaction of manganese dioxide with hydrochloric acid, HCl ( aq ) , as describe

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Answer:

0.9483 grams of manganese dioxide should be added to excess HCl.

Explanation:

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Temperature of the chlorine gas = T = 25°C= 298.15 K

Moles of chlorine gas = n

Using ideal gas equation:

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Then 0.01090 moles of chlorine gas will be obtained from:

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