Why is it useful for scientists to develop models for the structure of atoms? A. Atoms are too small to study directly.
B. Atoms move too quickly to see.
C. Looking at atoms directly can be harmful.
D. Atoms are too far away to study.

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

How is the atomic number of a nucleus changed by alpha decay

Which of the following are sources of revenue for media companies? a. direct sales to producers b.advertising and subscriptions c. online purchase d. capital investments