Question

Number of molecules in 4.4gm carbondioxide in s.t.p

Answer 1

atomic weight of CO2 = 44

mole of 4.4gm CO2 = 4.4/44 = 0.1

number of molecules = Avogadro number × moles = 6.022×10^23 ×0.1= 6.022×10^22