How many grams would 3.0 x 10^24 molecules of Al2(SO4)3 weigh

Aman applies a force of 500n to push a truck 100m down the street how much does he do?

If 15 drops of ethanol from a medicine dropper weigh 0.60g, how many drops does it takes from a dropper to dispense 1.0ml of ethanol? density of ethanol is ethanol is 0.80g/ml.

How many grams of ammonia are produced when 1.0 mole of nitrogen reacts