Question

2 moles of hydrogen molecule H2 how many grams are there

Answer 1

Answer:

4

Explanation:

since 1 mole H2=2gm

therefore 2mole H2=4gm

Answer 2

Given: 2 moles of hydrogen gas.

To find: We have to find the mass.

Solution:

The mass of hydrogen gas can be determined as follows-

The formula of hydrogen gas is $H_2$.

The atomic mass of H is 1.

Thus the molecular mass of hydrogen gas is 2×1=2g.

1 mole of hydrogen gas contains 2g hydrogen gas.

Thus 2 moles of hydrogen gas have 2×2=4g of hydrogen gas.

The mass of 2 moles of hydrogen gas is 4g.