How many atoms of hydrogen are in 240g of hydrogen peroxide?

Hydrogen Peroxide = H2O2 (Molar Mass = 34.02 g/mol)
? atoms H = (240 g H2O2) / (1 mol H2O2/ 34.02 g H2O2) / (2 mol H/ 1 mol H2O2) / ((6.022 x 10^23 atoms H)/ 1 mol H) = 8.5 x 10^24 atoms Hydrogen
Hope this can help!

molar size of hydrogen peroxide is M = 66.012 g/mol
n = m / M = 240 / 66.012 = 3.636 moles
each mole of every product includes NA particles. NA is Avogadro’s continual and it’s also equal roughly NA = 6.022×10^23
therefore amount of particles of hydrogen peroxide is
N = n × NA = 3.636 × 6.022×10^23 = 2.19 × 10^24 particles
each molecule includes two atoms of hydrogen so amount of hydrogen atoms is
H = 2 × N = 2 × 2.19 × 10^24 = 4.38 × 10^24

Molar size of hydrogen peroxide H2O2 is 66 g/mole
240 g/60g per mole = 4 moles
but each moles of hydrogen peroxide has actually 2 moles of Hydrogen H2
8 moles x 6.02 x 10^23

John is appropriate

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