a 9.70 dm3 sample of carbon dioxide at a tempature of 79.8 C° cools to -23.4C° what would the new volume be

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

Which statement best describes the flow of energy in this scenario

If anyone would be able to me out with these three questions it would be these are from the chem 2202 course.