Answer to Question #182859 in General Chemistry for Kristagay Tulloch

Question

Stoich Problem Set

    /27

1. Calculate the number of grams of ammonia gas needed to react completely with 75.0 g copper(Il) nitrate. The unbalanced equation for the reaction is:  /5
2. When aluminum is heated in oxygen. aluminum oxide is formed.

a.Write a balanced equation to show this reaction.                    /3

b.Calculate the mass of oxide that can be obtained from 25.0 g of the metal.

3.Calculate the number of moles of calcium chloride produced if 148 g calcium hydroxide is neutralized by hydrochloric acid.             /3

Answer 1

Cu(NO3)2 + 4NH3 = [Cu(NH3)4]](NO3)2.

4Al(s) + 3O2(l) → 2Al2O3