Question

what gram of H2O is formed if 2g of H2 reacts with 1g of O2​

Answer 1

Answer:

chk it

Explanation:

first we have to find the no of moles of O2 and H2

moles of H2=2g/2gmol-1

=1 mole

moles of O2=1g/32gmol-1

=0.03 moles

now by conversion factor

1O2=2H2O

0.03 moles=x

x=0.06 moles

mass of H2O=molar mass×moles

=18×0.06

=1.08 g