A nugget of gold with a mass of 521 g is added to 50.0 mL of water. The water level rises to a volume of 77.0 mL. What is the density of the gold?

A lead bar weighs 30.65 g and has the volume of 4.79 mL. What is the specific gravity of this steel bar?

What is the name of the compound Fe2O3? What are the two ions in this compound?

What is the name of the element Cu?

In what order were the subatomic particles discovered?

An order for a medication reads: Give 20.0 mg per kilogram of body weight. How much medication should be given to a toddler patient weighing 33 lb? (1 kg = 2.20 lb)

the density of ethanol, a colorless liquid that is commonly known as grain alcohol, is 0.798 g/mL. Calculate the mass of 37.5 mL of the liquid.

What is the compound formula for lithium chlorate?

Change 21.2 ºC to Kelvin.

An atom has 36 protons, 36 electrons, and 52 neutrons. What is the mass of this atoms?