Which type is every one in this picture: pure substance or mixture?

Identify a specific example for each type of technology

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

The plant food contains nh4)3po4 what tests would you run to verify the presence of the nh4 ion and the po4 ion