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alexgriva [62]
3 years ago
15

Which planet has these characteristics? - long, extremely hot periods of sun shining during the day - long, extremely cold night

s - the smallest planet A. Earth B. Mercury C. Mars D. Venus
Chemistry
1 answer:
Masja [62]3 years ago
6 0

Answer:Earth is correct!

Explanation:

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Answer:

D) cooling of the reaction mixture

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Increase in temperature speedens the rate of a chemical reaction

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Use the "x is small" approximation to find the concentration of the products in the following reaction which initially contains
Mrrafil [7]

Answer:

Concentration of product at equilibrium ;

[H^+]=0.0000229 M

[CN^-]=0.0000229 M

Explanation:

HCN(aq)\rightleftharpoons H^+(aq) + CN^-(aq)

initially

0.85 M        0    0

(0.85-x)M    x      x

The equilibrium constant of reaction = K_c= 6.17\times 10^{-10}

The expression of an equilibrium cannot can be written as:

K_c=\frac{[H^+][CN^-]}{[HCN]}

6.17\times 10^{-10}=\frac{x\times x}{(0.85-x)}

Solving for x:

x = 0.0000229

Concentration of product at equilibrium ;

[H^+]=0.0000229 M

[CN^-]=0.0000229 M

4 0
3 years ago
Mass is 5 grams and the volume is 4.5 grams what is the density
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Density = Mass/Volume

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What is the mass of one mole of Cl2
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70.906 g/mol

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Which statements describe how heat flows in foil? Check all that apply. Heat flows in all directions. Heat flows from left to ri
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