What is the empirical formula for the following:
PbsCr5020

The boiling point of liquids is very high what does it indicate

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.

Identify the electromagnets with poles that are reversed from the electromagnet shown above