How to balance chemical equations examples?

You placed a sample of a hydrate of calcium chloride (CaCl2) in a weighed test tube, and weighed the filled test tube. Then you heated it until no more water was evolved. After cooling, you weighed the test tube again. Mass of empty tube (g) 13.

What happens when a glass rod is dipped in HCl and is brought near ammonia gas?

Many acids come from chemical supply companies in specially-coated glass bottles with extra-thick walls. What is the most likely characteristic of an acid that requires a special container?

Calculate the pH of a solution having the following ion concentrations at 298 K. [H+] = 4.6 * 10^-2 M

What are the major species in solution when solid ammonium bromate is dissolved in water?

Are needed to digest food in the stomach

What is the volume of 2.1 moles of chlorine gas at STP?

If one starts with pure NO2 (g) at a pressure of 0.500 atm, the total pressure inside the reaction vessel when 2 NO2 (g) ⇌ 2 NO (g) + O2 (g) reaches equilibrium is 0.674 atm. Calculate the equilibrium partial pressure of NO2.

Mrs. Jones is pushing her daughter in a stroller. If the stroller has a mass of 5 kg and it is accelerating at 2 m/s2, what amount of force is Mrs. Jones applying to the stroller? N (free response)

Which kelvin temperature is equal to - 73 Celsius