A. argon
B. potassium
C. non of these
D. calcium

someone please help me​

The enthalpy of formation of water is -285.8 kj/mol. what can be inferred from this statement?

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 compound contain an iron with a 3+ charge