A solution is prepared by dissolving 15.0 grams of cesium chloride (CsCl) in 125.0 grams water. What is the mass percent of cesium chloride in this solution

Which statement describes the appearance of a temperature-vs.-time graph? a horizontal line shows that the temperature increases at a constant rate over time. a vertical line shows that the temperature decreases at a constant rate over time. horizontal lines where the temperature is constant during phase changes connect upward-sloping lines where the temperature increases. horizontal lines where the temperature increases are connected by upward-sloping lines where the temperature is constant for each phase.

Compare and contrast physical changes with chemical changes.

Which statement best describes the function of enzymes?