22. Plot a properly labelled graph of Concentration vs. Time in the space provided. Draw a curve to connect the points AND draw a line segment to represent your calculations in the previous question. Table 1: Reaction rate Concentration Time (s) (mol/L) 1 0.23 2 0.40 3 0.52 4 0.60 0.66 0.70 7 0.73 0.75 0.76 10 0.76 LO

What substance do you add to a solution in order to dilute it?

Three moles of sodium carbonate are mixed with two moles of lead nitrate in aqueous solution, leading to formation of a solid precipitate. How many moles of spectator ions remain in solution, assuming 100% yield of the precipitate? A. 12 B. 10 C. 5 D. 6 E. 11

Macmillan Learning Experiment 1: Suppose a student repeats the experiment, but adds 25 g of sodium bicarbonate to the 6 M HC instead of adding 1 M NaOH. What observations indicate that a reaction took place? Bubbles formed in the solution after the sodium bicarbonate was added to the HCl in the Erlenmeyer flas The solution changed color after the sodium bicarbonate was added to the HCl in the Erlenmeyer flask. A reaction did not happen when the sodium bicarbonate was added to the HCl in the Erlenmeyer flask. The temperature decreased after the sodium bicarbonate was added to the HCl in the Erlenmeyer flask. A precipitate (solid) formed after the sodium bicarbonate was added to the HCl in the Erlenmeyer flask. The temperature increased after the sodium bicarbonate was added to the HCl in the Erlenmeyer flask.