Question

No of protons in 2gram of methane

Answer 1

Molecular mass of ch4 is 16g. In 16g it contains 1 mole of molecule. Carbon atom has 6 p and hydrogen atom has 1p so total no of protons in 1 molecule is 6+4(1) = 10 therefore. In one mole there will be 10 moles of protons. So in 2 grams there will be 1.25 moles of protons . That will be 1.25*6.022*10^23=7.5275*10^23 proton