hey so i dont know if this website will actually help me bu

hey so i don’t know if this website will actually help me but i’m kind of desperate since my genius brother just went to college and can’t help me anymore..so anyways, i’m doing honors chemistry conversions and i’m having trouble understanding how to do them when the have two units ( ex: 34g/m^3 ) so here’s the problem:a substance has a density of 12.8 kg/m^3. how many grams of the material are needed to fill a volume of 2.00ft^3?