start out as one kind of rock, but large amounts of pressure and heat change them into a different kind.

Perform the following mathematical operations and report the answer to the appropriate number of significant figures 5.87998 + 3.100

If blood contains 150g of hemoglobin per liter of blood, how much hemoglobin would be contained in 10 ml of blood

Calculate the energy required to ionize a hydrogen atom to an excited state where the electron is initially in the n = 5 energy level. report your answer in kilojoules