Question

9. No. of oxygen atoms present in 8g Oxygen is equal to those of Hydrogen atoms present in — gm Hydrogen.

(a) 0.5 gm (b) 1 gm

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(c) 2 gm

(d) 4 gm.​

Answer 1

Answer:

its a)0.5 gram

we know, molecular mass of 16 gram oxygen and 1 gram oxygen contains 1 mole.

hence,by equation we can easily solve the problem

Answer 2

Answer:

No of atoms In 1mole of Oxygen= No of atoms in 1mole of Hydrogen

1 mole of oxygen = 16g

Oxygen is of half mole ie 8g

then hydrogen also be half mole

1 mole of hydrogen=1g

half mole of hydrogen = 0.5g