Use this chemical equation to answer the question. What coefficient of KCl will balance the equation? (AKS 3b, DOK 1) CuS + _KCl → CuCl2 + K2S

The softest and hardest minerals are: softest hardest

Who was the first scientist to measure speed as distance over time?

On a day when the barometer reads 75.23 cm, a reaction vessel holds 250 ml of ideal gas at 20 celsius. an oil manometer ( ρ= 810 kg/m^3) reads the pressure in the vessel to be 41 cm of oil and below atmospheric pressure. what volume will the gas occupy under s.t.p.?