What is the mass of an object with a density of 8.86g/cm3 and a volume of 6.80x10²cm3?

Which substance is a steroid? cholesterol fatty acid monosaccharide trans fat

Which statement is true about a catalyst? a: a catalyst decreases the rate of the reaction. b. a catalyst is consumed during a chemical reaction. c. a catalyst lowers the activation energy of a reaction. d. a catalyst increases the reactant concentration during a reaction.

Which property of a rock remains unchanged by mechanical weathering? a. total surface area b. size and shape c. mineral composition d. sharpness