Consider the following reaction:

2al(s)+3cl2(g) => 2alcl3(s);
δh= -1390.81 kj

a) how much heat is produced/required when 10 g of alcl3 forms?

b) how many grams of al are required to absorb/evolve 1 kj of energy?

Which type of fossil does this image depict?

Suppose you wanted to make 100 grams of water. what is the molar mass of water (h2o)?

Draw any one of the skeletal structures of a 2° alkyl bromide having the molecular formula of c6h13br and two stereogenic centers. indicate chirality by using wedge and hashed wedge notation. lone pairs do not need to be shown.