Why does ammonia act like a base?

(select those that apply)

It combines with H+ions.

Ammonia releases OH-ions.

It increases the OH-concentration.

It dissociates easily.

g Liquid hexane reacts with gaseous oxygen gas to produce gaseous carbon dioxide and gaseous water. What is the theoretical yield of water formed from the reaction of 6.89 g of hexane and 47.4 g of oxygen gas

What is the variable for this number 22.4L?

A pycnometer weighs 25.60 g empty and 35.55 g when filled with water at 20°C. The density of water at 20°C is 0.9982 g/ml. When 10.20 g lead is placed in the pycnometer and the pycnometer is again filled with water at 20°C, the total mass is 44.83 g.

Describe solids, liquids, and gases interms of how they fill a container. Use your descriptions to identify the physical state (at room temperature) of the following: (a) helium in a toy balloon; (b) mercury in a thermometer; (c) soup in a bowl.

Which of the following statements is not true about the decomposition of a simple binary compound? a) The products are the constituent elements. b) The reactant is a single substance. c) The reactant could be an ionic or a molecular compound.

What is limiting reajent?

What elements react the most? Like have the most reactivity.

A neutral atom has an atomic number of 20 and a mass number of 42. How many electrons does the atom have?

A rock is placed into water and the volume of water increase 15ml. what is the density of the rock if it had a mass of 24.3 grams.

Suppose a student did not fully redissolve the Al (OH) 3 that initially formed upon the addition of H2SO4. Predict and explain how this would impact the apparent percent yield this student determines.