Determine the molecular formula of a compound that is made up of 47.2 g potassium,
14.5 g carbon, and 38.5 g oxygen
if its molar mass is 166.2 g/mol.

Which real-world scenarios below represent physical and chemical changes? -running a car -exploding fireworks -mixing water and powdered drink mix -combining oil and vinegar to make salad dressing -taking aspirin for a headache -diluting bleach with water-digesting dinner-spreading peanut butter on bread

Calculate the molar mass of aluminum oxide (al2o3). express your answer to four significant figures.

Which of the following units is not an official si unit? mole liter kilogram ampere