Calculate the mass of bromine in 50.0 g of potassium bromide

What is the mass of sodium in 3 moles of sodium chloride

Which statement best describes the relationship between period and frequency of light waves? a) in wave b the period increases and the frequency decreases from wave a. b) in wave a the period increases and the frequency decreases from wave b. c) in wave b the period is shorter and the frequency is greater than in wave a. d) in wave a the period is shorter and the frequency is greater than in wave b.

All motion is caused by force? true or false