Asystem of ideas that explains many related observations and is supported by a large body of evidence collected through scientific investigation is considered a
a. hypothesis
b. theory
c. scientific law
d. scientific method

Consider the nuclear equation below. 239/94 pu—-> x+ 4/2 he. what is x?

Three alkali metals in group 1 are a. calcium, strontium, barium b. boron, aluminum, gallium c. sodium, potassium, rubidium d. fluorine, iodine, chlorine

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