Question

how many grams of o2 will have same no. of molecule to that of 0.5 g of h2

Answer 1

Your answer :- 8gm


No. of molecules = Mole × Avogadro number (N0)

Mole = weight (in gm)/molar mass

Mole of hydrogen gas = 0.5/2 = 0.25

Number of molecules = 0.25 × N0


Now let the weight (in grams) of Oxygen be x

So mole = x/molar mass

=> mole of O2 = x/32

Molecules = x/32 × N0

But we have to find x such that both have same molecules.

=> x/32 × N0 = 0.25 × N0

N0 and N0 cancelled

=> x/32 = 0.25

=> x = 0.25 × 32

=> x = 8 gm


Your answer is 8gm


Hope it helps dear friend ☺️✌️

Answer 2

Heyy mate. . . here is ur answer. . .
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Answer :-8 grams