Students in science class were conducting solubility experiments using four
salts and water. Students hypothesized that increasing the water temperature
would increase suability of the four salts. At the conclusion of all the trials,
they constructed this graph showing the maximum solubility of the four salts,
in grams per 100 milliliters of water (g/100 mL) at various temperatures. Marie
and Calvin questioned the results. They tried to dissolve 45 grams of NaCl in
100 grams of water at 80°C. Only 40 grams dissolved; 5 grams settled at the
bottom of the beaker. Calvin suggested that they heat the water above boiling,
100°C. Predict the results of increasing the water temperature in this trial.

Temperature and kinetic energy are proportional. a) adirectly b) directly c) indirectly

Describe the chemical reaction based on the chemical equation below. also, explain whether the equation is balanced.

Astudent made a graph plotting the progress of a reaction over time. the student forgot to label the y-axis of the graph. a graph is shown with two graph lines. one graph line starts at a higher position on the y axis and slopes downwards towards the right. the other graph line starts at a lower position on the y axis and slopes upwards towards the right. the two graph lines stop short of intersecting each other and continue as separate lines which gradually become straight and parallel to the x axis. a vertical line is shown at a point where the two graph lines finally became parallel to the x axis. this vertical line is labeled equilibrium. the title on the x axis is time and an arrow pointing towards the right is shown above time. the title on the y axis is left blank. what best explains the label that the student should use on the y-axis? amount, because as the amount of product decreases, the amount of reactant increases over time. reaction rate, because forward and backward reaction become equal at equilibrium. amount, because the amounts of reactants and products become constant after equilibrium is reached. reaction rate, as the rate of forward reaction increases and rate of backward reaction decreases over time.