Tetrachloromethane consists of 10.05% of carbon, 0.83% of hydrogen and 89.12% of chlorine. It's relative molecular mass is 119.5. Calculate its molecular formula

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.

What energy is it when you flip on a switch on a lamp

Carbon-14 undergoes radioactive decay in the reaction above. determine the type of radiation emitted in this reaction and describe what is happening to the nucleus during this reaction.