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Calculate the molar mass of aluminum oxide (al2o3). express your answer to four significant figures.

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.

According to coulomb's law, how would the electrical force between particles change if the product of their electrical charge increased?