Which name is given to the ancient landmass made up of modern-day africa, south america, america, australia, antarctica? a) gondwanaland b)pangea c)mesosaurus d)laurasia

An excess of lithium oxide undergoes a synthesis reaction with water to produce lithium hydroxide li2o+h2o→2lioh if 1.05 g of water reacted, what is the theoretical yield of lithium hydroxide? a) 5.83 x 10–2 g lioh b) 1.17 x 10–1 g lioh c) 2.79 x 100 g lioh d) 1.40 x 100 g lioh

To find the enthalpy of a reaction in the lab, you measured the of the reactants and the change during the reaction.

You have a sample of a metal, the sample is exactly 6.02 x 1023atom, if the sample has a mass 55.85 what metal is your sample made of?