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solong [7]
3 years ago
8

Based on the graph, which statement about human use of natural resources is most likely false?

Chemistry
1 answer:
svp [43]3 years ago
8 0

Hey love! <3

Answer:

C. Resource use by humans has gone up and down over the years is a false statement

Explanation:

<em>In the graph you can make an observation on how the increase of human population is directly positive.</em>

<em>The resource use either has a positive or negative correlation, making it impossible for the usage to fluctuate over the years.</em>

<em>Hope this brightens up your day a little! ❀‿❀ Sincerely, Kelsey from Brainly.</em>

<em>~ #LearnWithBrainly ~</em>

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The equilibrium constant, K, for the following reaction is 1.80x102 at 698 K. 2HI(9) =H2(g) +129) An equilibrium mixture of the
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Explanation:

The equilibrium constant of the reaction = K_c=1.80\times 10^{-2}

Initial  concentration of HI = 0.311 M

After addition 0.174 mol of HI(g)

Concentration of HI added = \frac{0.174 mol}{1 L}=0.174 M

New concentration of HI = 0.311 M + 0.174 M = 0.485 M

     2HI\rightleftharpoons H_2+I_2

Initial  concentration:

0.311 M                4.71\times 10^{-2} M           4.71\times 10^{-2} M  

At equilibrium:

(0.485 M - x)  (4.71\times 10^{-2} M+x)           (4.71\times 10^{-2} M+x)  

K_{eq}=\frac{[H_2][I_2]}{[HI]^2}

1.80\times 10^{-2}=\frac{(4.71\times 10^{-2} M+x)\times (4.71\times 10^{-2} M+x)}{ (0.485 M-x)^2}

\sqrt{1.80\times 10^{-2}}=\frac{(4.71\times 10^{-2} M+x)}{ (0.485 M-x)}

0.1342=\frac{(4.71\times 10^{-2} M+x)}{(0.485 M-x)}

0.065087 M-0.1342x=4.71\times 10^{-2} M+x

0.065087 M-4.71\times 10^{-2} M=1.1342x

x=\frac{0.017987 M}{1.3142}=0.01586 M

Equilibrium concentrations:

[HI]=0.485 M-x = 0.485 M - 0.01586 M= 0.46914 M

[H_2]=[I_2]=4.71\times 10^{-2} M+x=4.71\times 10^{-2} M+0.01586 M

[H_2]=[I_2]=0.06296 M

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Answer: Nov 24, 2010 · A buffer solution is 0.100 M in both HC7H5O2 and LiC7H5O2 and has a pH of 4.19. Which of the following pH values would you expect from the addition of a small amount of a dilute solution of a strong base? A. 4.49 B.3.89 C.5.69 D. 3.69 E. There is not enough info to determine

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