The atomic mass of hydrogen-1 is 1.008 and the atomic mass of helium-4 is 4.003. find the difference in grams between 4 moles of hydrogen and one mole of helium. a) 4.81 x10-26 g b) 0.029 g c) 1.7 x 1022 g d) 0 grams

4 moles of hydrogen  = 4 * 1.008 = 4.032 grams

1 mole of helium = 4.003 grams

Difference is  4.032 - 4.003

= 0.029 g

The correct answer is option B.

Explanation:

The atomic mass of hydrogen-1 = 1.008 g/mol

The atomic mass of helium-4 = 4.003 g/mol

Mass of 4 mole of hydrogen = 4 × 1.008 g/mol = 4.032 g

Mass of 1 mole of helium = 1 × 4.003 g/mol = 4.003 g

Difference of between 4 moles of hydrogen and 1 moles of helium :

4.032 g - 4.003 g = 0.029 g

it's c (engineer's do their work with mechanical stuff not on any living being)