Question

2g of hydrogen gas contains

Answer 1

Answer:

H2O2 has 2 hydrogen atoms and 2 oxygen atoms in it. So one molecule of hydrogen peroxide weighs in at 34.02 u. The periodic table provides you with individual atomic masses. If you know the number and type of elements in a molecule you can add up the individual masses to find the molecular mass or molecular weight.

Answer 2

Explanation:

we know that dihydrogen (H2) has 2 hydrogen atoms per molecules, so there will be 2* 1g hydrogen per mole = 2g dyhydrogen per mole , and we have 4g , then we know 4g/ 2g per mole = 2w mole dihydrogen in 4g...

its correctly... i hope you understand and thanked me...