Question

Hey can someone help me and show work please



What is the mass 4.5x10^22 of molecules of hydrogen peroxide (H2O2)? Show your work in the space below.



1.78 g


2.54 g


3.2 g


4.61 g

Answer 1

Answer: 2.54g

Explanation:

Molar Mass of H2O2 = (2x1) + (2x16) = 34g/mol

1mole (34g) of H2O2 contains 6.02x10^23 molecules

Therefore Xg of H2O2 will contain 4.5x10^22 molecules i.e

Xg of H2O2 = (34x4.5x10^22)/6.02x10^23 = 2.54g