During a beta decay reaction, a(n) is emitted from the reactant.
helium nucleus
O electron
O hydrogen nucleus
O proton

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.

How would the number of moles (n) of o2 change if the atmospheric pressure doubled but all other variables stayed the same

What does the mass of 0.7891 mol of ferric oxide (fe2o3)