Question

calculate mass in gram of 5.8 mol n2o

Answer 1

MOLES = GIVEN MASS / MOLECULAR MASS

AND HERE MOLECULAR MASS OF N20 IS 44 g (as Nitrogen Mass is 14 and here we have two molecules so (14*2) and similar with oxygen as it has mass of 16 amu )(If any doubts refer periodic table)

Therefore applying the above formula

5.8 = Mass / 44

Mass = 5.8 * 44

Mass = 255.2

May it help....