Question

substance having maximum no of molecules is 1)44.8 lit of h2 at stp 2)2gms of helium 3)16gms of methane 4)33gms of co2

Answer 1

Answer:

mole of a gas at STP =22.4 L

44.8 L of hydrogen at STP corresponds to

22.4

44.8

=2 moles.

2 g helium corresponds to

4

2

=0.5 moles.

16 g methane corresponds to

16

16

=1 mole.

33 g carbon dioxide corresponds to

44

33

=0.75 moles.

hence 1 is the answer

Answer 2

Answer:

1 mole of a gas at STP  =22.4 L

44.8 L of hydrogen at STP corresponds to 

$\frac{44.8}{22.4}$ =2 moles. 

2 g helium corresponds to 

$\frac{2}{4}$ =0.5 moles. 

16 g methane corresponds to 

$\frac{16}{16}$ = 1 mole. 

33 g carbon dioxide corresponds to 

$\frac{33}{44}$ = 0.75 moles. 

Hence, option A is the correct answer.