You got out to dinner and the bill comes to $ 44.79. How much should you tip if you want the tip to be 18.0% of the bill?

An aqueous solution of potassium hydroxide is standardized by titration with a 0.194 m solution of hydrobromic acid. if 25.2 ml of base are required to neutralize 24.2 ml of the acid, what is the molarity of the potassium hydroxide solution? m potassium hydroxide

Use the periodic table to determine the electron configuration of dysprosium (dy) and americium (am) in noble-gas notation.

Which class of molecules functions as chemical signals? hormones water carbohydrates proteins