Question

a) 6.022 x 10
b) 6.022 x 10"
c) 22.4 x 10
d) 22.4 x 10
11. 11.2 cm of hydrogen gas at STP, contains -----moles.
a) 0.0005
b) 0.01
c) 0.029
d) 0.5
12. 4.4. g of an unknown gas occupies 2.24 L of volume under STP conditions. The gas may be -------
a) CO,
b) CO
co
d) SO,
NAS​

Answer 1

Answer:

At STP,T=273K,P=1atm

V=112cm

3

=112ml=0.112L

∴PV=nRT

∴n=

RT

PV

=

0.0821×273

1×0.112

=0.005 moles

∴112cm

3

of hydrogen gas at STP contains 0.005 moles

Hence, option C is correct.