A 3.9 mole sample of uranium decays until only 3 moles remain. How many grams of uranium decayed? (Not remained!)

After cloud droplets form, what must happen to them for precipitation to occur?

Calculate the concentration of all species in a 0.165 m solution of h2co3.

Aweight lifter raises a 1600 n barbell to a height of 2.0 meters. how much work was done? w = fd a) 30 joules b) 3000 joules c) 320 joules d) 3200 joules