Chalk is composed of calcium carbonate, CaCO3. A student does not have a balance but does have 3.00M hydrochloric acid, HCl. If the student finds that it takes 327 millimeters of the acid to react with the chalk, what was the mass of the chalk in grams?

CaCO3(s) + 2HCl(aq) ⟶ CaCl2(aq) + CO2(g) + H2O(I)

An atom of which element reacts with an atom of hydrogen to form a bond with the greatest degree of polarity ?

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

Two people each hold the end of a rope and create waves by moving their arms up and down. this wave is best classified as a transverse wave because a) both the rope particles and the wave are moving in the same direction. b) the wave is moving up and down as the particles of the rope move horizontally. c) the wave is moving horizontally as the particles of the rope move up and down. eliminate d) the wave is moving in a parallel direction with the motion of the person's arms.