How many nitrogen atoms are present in calcium nitrate, Ca (NO3) 2?

The constant pressure molar heat capacity, C_{p, m}C p, m , of methane gas, CH_4CH 4 , is 35.31/text{ J K}^{-1}/text{ mol}^{-1}35.31 J K - 1 mol - 1 at temperatures close to 298/text{ K}298 K. Calculate the enthalpy change when 1.6/text{ kg}1.

Glycine has two ionizable groups, a carboxyl group and an amino group. Calculate the fraction of glycine that has its amino group protonated at pH 8.6. The pKa values for glycine are pK1 = 2.34 (carboxyl group) and pK2 (amino group) = 9.60.

A mixture was found to contain 1.50g of NH4CL, 0.80 g of NaCl, and 1.20 g of SiO2. What is the percentage of sand in this mixture?

Why is water the universal solvent? solubility, solute, solvent, dissolve?

List 3 scenarios for a substance being classified as a weak acid

Fission reactions can get of of control without what taking place?

In which main energy level does the 's' sublevel first appear? K (first main energy level) L (second main energy level) M (third main energy level) N (fourth main energy level)

What is the nuclear charge of an alpha particle?

How many protons electrons and neutrons does 13C contain

Are all individuals in a population of animals or a population of plants identical