In a chemistry lab 4 moles phosphorus reacts with bromine to produce phosphorus bromide. How many moles of phosphorus bromide would you expect to produce? If you actually produced 960 g of phosphorus bromide what is the percent yield?

Sylvanite is a mineral that contains 28.0% gold by mass. how much sylvanite would you need to dig up to obtain 77.0 g of gold? explain how you got your answer and the steps you took. you

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.

This image is an example of a(n) a) atom. b) compound. c) mixture. d) molecule.