A.35 m solution of weak acid, hx, has a h+ of 4.15×10^-3. what is the value of ka for this acid

The grooves or folds of the brain are called

In a laboratory, 1.55mg of an organic compound containing carbon, hydrogen, and oxygen is burned for analysis. this combustion resulted in the formation of 1.45mg of carbon dioxide and .89 mg of water. what is the empirical formula for this compound?

Reactions in cells take place at about a. 40°c b. 0° c. 100°c d. 60°c