A student determines that the value of Ka for H2S = 1.3×10-7 . What is the value of pKa?

If the atomic mass of an atom is 34 and the atom contains 13 protons, how many neutrons does the atom contain?

Miner's coal distributors does not mine coal itself, nor does it even store or handle the coal. instead, miner's solicits orders for low sulfur coal from other firms, then purchases the required amount from suppliers and directs them to ship the coal to its customers. what is miner's

If a solution contains 3 moles/liter of sodium chloride (nacl, made of sodium ions and chloride ions), what is the osmolarity of this solution