Calculate number of hydrogen atom present in 40g of urea,(NH2)2CO ​

The drawing represents the movement of particles in a substance. what changes of state can this substance undergo

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

At 300 mm hg, a gas has a volume of 380 l, what is the volume at standard pressure