How many grams of chromium (cr) are present in 4.20 moles of the metal?

Seltzer water is created by placing water under pressure with carbon dioxide gas. which of the following statements best describe seltzer water: a. the solution will be slightly acidic b. the solution will be slightly basic. the solution will be strongly acidic. d. the solution will be strongly basic. e. the solution will be neutral

Which is an example of a reversible physical change?

The empirical formula of a compound is ch2o and its mass is 120 amu/molecule, what is its formula?