What was henri becquerel studying when he accidentally discovered radioactivity?

Based on the balanced reaction 4Cr+3O2=2Cr2O3 how many grams of Cr (MM=52.00g/mol) will react with 5.10x10^2 grams of O2 (MM=32.00g/mol) in complete Scientific notation

How would each of the following procedural errors affect the results to be expected in this experiment? Give your reasoning in each case. (A) Not all of the liquid was vaporized when the flask was removed from the water bath.

The nuclear product of radioactive decay is called the

A certain object has a volume of 25.0 ml and a mass of 100 g. what is the density of the object

Does an acid gain or lose a hydrogen cation, H+, during an acid-base reaction?

Which energy source produces carbon dioxide? a. plutonium b. uranium c. sunlight d. natural gas

Substance A and B are colorless, odorless liquids that are nonconductors and flammable. The density of substance A is 0.97 g/mL; the density of substance B is 0.89 g/mL. Are A and B the same substance? Explain your answer.

Describe what what food web is.

What are quarks and gluons made of?

If 1. oo mol CS2 reacts with 1.00 mol O2, identify the limiting reactant