Question

when 2.5 g of a solid was heated 560 cm cube of a gas measured at STP we evolved and a residue of 1.4 g was left what is the molar mass of the gas

Answer 1

Answer:

1.4 gram left as residue that means those are impurities so the pure mass of gas is equal to=2.5-1.4 =1.1 gram

m =1.1 gram volume =560 cm^3/560 ml

it shows that 560 ml occupy =1.1 gram

then 22400 ml will occupy =( 1.1÷560) 22400= 43.99 almost equal to 44 grams.....

Explanation:

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