First slide

Numericals involving moles and volume of gas at STP

Question

Which of the following sample weighs maximum ?

Easy

A

1 mole of rhombic sulphur
B

224 litres of ethene at STP
C

10 moles of oxygen
D

248 grams of iron

Solution

(1) 1 mole of sulphur ( S₈ ) = 1 $\times$ 256g = 256 g ;
(2) 224 litres of ethene at STP= 224 $\times$ $\frac{28}{22.4} g$ = 280 g ;
(3) 10 moles of oxygen = 10 $\times$ 32 g = 320 g ;
(4) 248 grams of iron ;

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