Question

Predict the mass possessed by certain number of oxygen atoms which is equal to the number of molecules present in 1g of hydrogen gas .

Answer 1

Mass of oxygen atom which is equal to the number of molecules present in 1g of hydrogen gas is 16 grams.

●we know that1 mole of any gas has 6.022×10^23 molecules.

●1 mole of hydrogen gas has weight of 2grams.

●2g of hydrogen has 6.022×10^23 molecules

So 1 g hydrogen has 6.022×10^23/2 molecules

So 1g has 3.011×10^23 molecules.

●mass of oxgen gas =32grams

So 32 g of O2 has 6.022×10^23 molecule

Or we can say 6.022×10^23molecules are there in 32 g of O2

Now 1 molecules pesent in. 32/6.022×10^23 grams.

Now 3.011×10^23 molecules present in (32×3.011×10^23)/6.022×10^23 grams.

So 3.011×10^23 molecules present in 16 grams of oxygen .

Mole of oxygen is 0.5 mole

Mass of oxygen having same number of molecules that in 1g of hydrogen is 16 grams.

Answer 2

Explanation:

mass of oxygen in 1 gram of hydrogen gas is 8 gram