Balance the following equation. Choose "blank" if no coefficient other than 1 is needed. Fe(NO3)3 + Na2CO3 Fe2(CO3)3 + NaNO3

NUMBER OPTIONS FOR EACH: BLANK,2,3,4,5,6

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.

(1.6 × 10-19)(5.0 × 106) = c × 10d identify the missing numbers below to show the result of multiplying the numbers.

The element that has the greatest electronegativity is