Select the correct answer. what effect would adding water (h2o) have on this reaction over time? (nh4)2co3(s) ⇌ 2nh3(g) +co2(g) +h2o(g) a. the concentration of products would increase, and the concentration of reactants would decrease. b. the concentrations of both products and reactants would increase. c. the concentration of products would decrease, and the concentration of reactants would increase. d. the concentrations of both products and reactants would decrease.

Next a skier is pulled by a tow rope up a frictionless ski slope that makes an angle of 15 with the horizontal. the rope moves parallel to the slope with a constant speed of 0.69 m/s. the force of the rope does 800 3 of work on the skier as the skier moves a distance of 8.4 m up the incline. (a) if the rope moved with a constant speed of 2.2 m/s how much work would the force of the rope do on the skier as the skler moved a distance of 8.4 m up the incline? at what rate is the force of the rope doing work on the skier when the rope moves with a speed of (b) 0.69 m/s and (c) 2.2 m/s?

Which of the following are appropriate acceleration units?

What distance does a car travel as its speed changes from 0 to 20 m/s in 17 s at constant acceleration?