What will the volume be of 50 moles of helium at 25°C and 2.5 atm?​

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 is true according to the law of conservation of energy

What is the volume of 3.2 moles of chlorine gas (cl2) at 295 k and 1.1 atm?