anonymous
  • anonymous
#1: What happens to a catalyst as a result of a chemical reaction? A. It is consumed. B. It slows a chemical reaction. C. It changes to something else. D. It is not consumed. ***MY answer: D @jim_thompson5910 is that right? :)
Chemistry
  • Stacey Warren - Expert brainly.com
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chestercat
  • chestercat
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
anonymous
  • anonymous
#2: What happens in a reaction if it is at chemical equilibrium? A. The rate of the forward reaction exceeds that of the reverse reaction. B. The rate of the reverse reaction exceeds that of the forward reaction. C. The rate of the forward reaction equals the rate of the reverse reaction. D. All of the products are used up. ***my answer; C is this right? :)
anonymous
  • anonymous
#3: A chemical reaction is at equilibrium. What will be the effect if more of the product is added? A. The reaction will shift to the left (toward the reactants). B. There will be no effect; the reaction will stay at equilibrium. C. The reaction will shift to the right (toward the products). ***my answer; A is that right? :)
anonymous
  • anonymous
#4: Which of the following is likely to occur if more reactants are added to a reaction that is at chemical equilibrium? A. There will be no effect; the reaction will stay at equilibrium. B. The reaction will shift to the left (toward the reactants). C. The reaction will shift to the right (toward the products). ***My answer: C what do you think of this one? :D

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jim_thompson5910
  • jim_thompson5910
# 1 http://en.wikipedia.org/wiki/Catalysis "...Unlike other reagents in the chemical reaction, a catalyst is not consumed..."
anonymous
  • anonymous
#5: Consider the reaction 2NaN3 --> 2Na + 3N2, which is the first reaction that occurs when an air bag expands in a car undergoing a collision. This reaction happens very quickly, as you might suspect. A graph showing the amount of nitrogen gas (N2) could be best described as which of the following? A. The graph line's general trend is absolutely horizontal. B. The graph line's general trend is increasing from left to right. C. The graph line's general trend is decreasing from left to right. D. The graph line's general trend is nearly horizontal. ***i'm not too sure on this one.. what do you think? i'm leaning towards either B or D... :/
jim_thompson5910
  • jim_thompson5910
1D is correct
anonymous
  • anonymous
yay :)
jim_thompson5910
  • jim_thompson5910
# 2 http://en.wikipedia.org/wiki/Chemical_equilibrium "In a chemical reaction, chemical equilibrium is the state in which both reactants and products are present at concentrations which have no further tendency to change with time.[1] Usually, this state results when the forward reaction proceeds at the same rate as the reverse reaction" 2C is correct
anonymous
  • anonymous
awesome !! :)
jim_thompson5910
  • jim_thompson5910
3A is correct
anonymous
  • anonymous
wootwoot :)
jim_thompson5910
  • jim_thompson5910
4 is the opposite, so that would be C, you got it
anonymous
  • anonymous
yayy :)
jim_thompson5910
  • jim_thompson5910
2NaN3 --> 2Na + 3N2 means you're going from 2NaN3 to 2Na + 3N2
jim_thompson5910
  • jim_thompson5910
so you start with 2NaN3 and end up with 2Na + 3N2
anonymous
  • anonymous
mhmm :)
anonymous
  • anonymous
idk what that means though :(
anonymous
  • anonymous
not very sure on this one :/
jim_thompson5910
  • jim_thompson5910
so that means we start out with no N2 and end up with a lot of N2
jim_thompson5910
  • jim_thompson5910
so the N2 amount is ______
anonymous
  • anonymous
ermm 2 ? ;/
jim_thompson5910
  • jim_thompson5910
yep, B. The graph line's general trend is increasing from left to right.
jim_thompson5910
  • jim_thompson5910
the amount of N2 is increasing as the airbag expands
anonymous
  • anonymous
okay! awesome :) thank you!! :D ahh i see :P
anonymous
  • anonymous
okay! awesome :) thank you!! :D ahh i see :P

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