How many grams of chromium are needed to react with an excess of cuso4 to produce 27.0g cu?
a) 14.7 grams
b) 18.0 grams
c) 33.2 grams
d) 81.5 grams

What kind of intermolecular forces act between a hydrogen fluoride molecule and a hydrogen peroxide molecule? note: if there is more than one type of intermolecular force that acts, be sure to list them all, with a comma between the name of each force.

Complete the following radioactive decay problem. tan+on-? c+th

Which element below could be and isotope of this atom