2Al + 6HBr --> 2A Br3 + 3H2 When 86.94 g of Aluminum reacts with 401.26 g of HBr:
1. What is the limiting reactant?
2.What is the maximum theoretical amount (in grams) of H2 that can be formed?
3. How much excess reactant is left over after the reaction stops?
4. If a student in a lab performed this experiment and got a 90% Yield of H2, what was the actual yield of H2

the earth would become to overheated and everything alive on it will eventually die from overheating. plants will eventually die as well, water will evaporate, and it will be nothing but a hot planet without anything living on it.

1. a)c-14 has two more protons

2. d)they have different numbers of protons, neutrons, and valence electrons; they are all gases at room temperature.

3. c) iron and nickel.