How many resonance structures does NH3 have?

I believe that there are none, but I would like some confirmation ...

What is the max amount of Cu that would be produced by reacting 20g of Al with excess CuSO4

Water is a good choice of solvent because it is benign, cheap and readily available. Identify two characteristics that make water a good choice for the recrystallization solvent for benzoic acid?

For the reaction represented by the equation 2KClO3 → 2KCl + 3O2, how many grams of potassium chlorate are required to produce 160 g of oxygen? Type the numeric value only.

You perform an experiment producing 15.5 grams of calcium carbonate. If the theoretical yield of the reaction is 18.8 grams, then what is the percent yield

When a strong base is added to the pale blue solution of cuso4, a precipitate forms and the solution above the precipitate is colorless what is the net ionic equation that describes this irreversible reaction?

A gas has a pressure of 2.0 atm. If the temperature decreases from 250K to 125K and the volume remains constant, what will be the resulting pressure?

Calculate the number of moles of Barium hydroxide, Ba (OH) 2, present in a 100.0 g sample.

Which type of reaction occurs in the following? 2HgO (s) - - 2Hg (l) + O2 (g) 1. a decomposition reaction in which a metal is reduced 2. an acid-base neutralization reaction to produce oxygen gas a displacement 3.

Is pulverizing an aspirin a physical or chemical process

Explain two reasons why we can conclude that the rise of the water in the glass tube is due to root pressure and not transpiration or capillarity