13. Salt and benzoic acid in an aqueous solution can be separated with ice and filter paper. True

False

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.

Astudent reacts 13 moles of iron with 21 moles of oxygen according to the following equation:

How many grams of mgbr2 are needed to produce 75g or metal?