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Vaselesa [24]
3 years ago
11

PLEASE HELP I really need someone to answer this!!!!

Chemistry
2 answers:
marshall27 [118]3 years ago
6 0

Answer: I think it’s the first one

Molodets [167]3 years ago
4 0
the first one with the penny in vinegar :)
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Which substance has vibrating particles in fixed positions? Ca(S) or CaCl2 (aq)
OLga [1]

Ca(S) I looked it up



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What factors affect the rate of dissolving a solid in a liquid? Explain...
tester [92]

stirring, temperature, and particle size

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Consider the reaction below 2SO2(g) + O2(g) ⇌ 2SO3(g) At 1000 K the equilibrium pressures of the three gases in one mixture were
Vsevolod [243]

Answer:K_p for the reaction is 3.45

Explanation:

The balanced chemical reaction is:

          2SO_2(g)+O_2(g)\rightleftharpoons 2SO_3(g)                  

At eqm.   0.562 atm   0.101 atm    0.332 atm

As we are given that:

The expression of K_p for above equation follows:

K_p=\frac{(p_{SO_3})^2}{(p_{SO_2})^2\times p_{O_2}}

Putting values in above equation, we get:

K_p=\frac{(0.332)^2}{(0.562)^2\times 0.101}=3.45

The value of K_p for the reaction is 3.45

8 0
3 years ago
In the combined gas law, if the volume is decreased, what happens to the temperature if pressure remains constant?
Flura [38]

The correct answer is A. In the combined gas law, if the volume is decreased and the pressure is constant, then the temperature decreases.

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 <span>Assume the volume decrease by half; V2 = V1/2</span>

 <span>P1V1/ T1 = P2V1 /2 T2</span>

 <span>Cancelling terms,</span>

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T2 = T1/2

 <span>Thus, the temperature decreased.</span>

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3 years ago
The chemical equation shown represents photosynthesis. Carbon dioxide plus A plus light with a right-pointing arrow towards B pl
astra-53 [7]

Answer: <u><em>Option B; It traps light energy and converts it into chemical energy.</em></u>

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3 0
3 years ago
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