A certain halohydrocarbon is found to be 71.65 % Cl, 24.27 % C, and 4.07 % H by mass. a) Determine the empirical formula. b) Determine the molecular formula if the molar mass is found to be 148.44 g/mol

Which of the following signs of a chemical reaction are observed in the reaction of potassium with water? precipitate formed temperature change smell produced gas produced color change

Which of the following is true about the products formed during photosynthesis? (5 points) select one: a. they have the same mass as the mass of reactants. b. they are the same set of compounds as the reactants. c. they have more mass than the mass of reactants. d. they are chemically the same as the reactants.

Hno2 + caco3 = h2co3 + ca(no2) can someone balance this