Question

Plz help me fast!!

Calculate the number of Hydrogen present in 1 dozen molecule of hydrogen gas.
Convert the given number of hydrogen in terms of number of
moles.

fast !! I will mark brainliest..

Answer 1

HELLO DEAR,

NO. OF MOLECULES IN ONE DOZEN =12

NO. OF HYDROGEN ATOM PRESENT IN 12H2

MOLECULES=12×3=24H atom

6.023×10²³ MOLECULES=1 MOLES OF H2 molecules

1molecule =1/6.023×10²³moles


12molecules of HYDROGEN(H2)=12/6.023×10²³moles
=>2×10^(-23) moles


I HOPE ITS HELP YOU DEAR
, THANKS

Answer 2

In 1 molecule of H2= 2 atoms of Hydrogen.
And, no of atoms present in 12 molecules of H2= 2× 12 =24 atoms of Hydrogen.
Also, 1 mole of H2=6.022 × 10 ^23 molecules of Hydrogen.
Thus, 12 molecules of Hydrogen = 12/( 6.022 ×10 ^23) mole of H2 =2 × 10 ^-23 moles of H2.