PLEASE HELPPP ME Use the following balanced chemcial equation to answer the question below.

CaBr2 + Na2SO4 --> CaSO4 + 2NaBr

1. How many moles of sodium bromide can be made from 5 moles of calcium bromide

2. How many grams of calcium sulfate will be made from 2.00 moles of calcium bromide

3. How many grams of calcium bromide will be needed to make 845 grams of calcium sulfate

Hey guys so i need to know what is _nh3+> nh4oh ~chemistry~

Each of the following reactions is allowed to come to equilibrium and then the volume is changed as indicated. predict the effect (shift right, shift left, or no effect) of the indicated volume change. drag the appropriate items to their respective bins. co(g) + h2o(g) < => co2(g) + h2(g) (volume is decreased) pcl3(g) + cl2(g) < => pcl5(g) (volume is increased) caco3(s)< => cao(s) + co2(g) (volume is increased)

Correct relationship between molecular formula and empirical formula