A) The student dissolves the entire impure sample of CuSO4(s)CuSO4(s) in enough distilled water to make 100.mL100.⁢mL of solution. Then the student measures the absorbance of the solution and observes that it is 0.300.30. Determine the concentration of CuSO4(aq)CuSO4(aq) in the solution. b) Calculate the number of moles of CuSO4CuSO4 that were in the impure sample of CuSO4(s)CuSO4(s).

c)In addition to the number of moles of CuSO4CuSO4 calculated in part (b)(b), what other quantity must be measured in order to calculate the mass percentage of CuSO4CuSO4 in the impure sample of CuSO4(s)CuSO4(s)?

Which explanation is true about what happens to a ray of light when it strikes a mirror? a. a light ray is transmitted toward a mirror at a certain angle. the light ray is then reflected by the mirror at an equal angle but in the opposite direction of the transmitted ray. b. an incident ray strikes a mirror at an angle with a line perpendicular to the mirror. the light ray is then reflected at an angle equal to the angle of incidence but on the opposite side of the perpendicular line. c. a reflecting ray strikes a mirror at an angle with a line perpendicular to the mirror. the light ray is then refracted at an angle equal to the angle of the reflecting ray and on the same side of the perpendicular line. d. an incident ray strikes a mirror at an angle with a line parallel to the mirror. the light ray is then transmitted at an angle equal to the angle of incidence but on the opposite side of the parallel line. you so much! : -d take the time to try and answer correctly.

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Areaction is first order with respect to reactant x and second order with respect to reactant y. which statement describes the rate law for this reaction?