What is the mass in grams of 2.00 10 5 atoms of naturally occurring neon

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

What is the mass of 0.46 mil of mgcl2

The number to the right of an element's symbol (ex. c-12) identifies the of an isotope.