4 years ago

Please help me will reward Brainly

Chemistry

2 answers:

Damm [24]4 years ago

5 0

Is it carbon dioxide

zhannawk [14.2K]4 years ago

5 0

The answer is Carbon Dioxide (Co2).

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The critical role of the atmosphere is best described as ?

olchik [2.2K]

Answer:

I would say to keep the oxygen we breathe in or to filter out the bed uv rays from the sun like radiation.

Explanation:

im guessing

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3 years ago

What is the [oh−] of a solution if its ph = 8.78? answer in units of m?

dexar [7]

PH = -log([H+])
[H+] = 10^(-pH)

[H+] = 10^(-8.78) = 1.65*10^-9

[H+][OH-] = Kw
Kw = 1.0*10^-14 at 25 degrees celsius.

[OH-] = Kw/[H+] = (1.0*10^-14)/(1.65*10^-9) = 6.06*10^-6

The concentration of OH- ions is 6.1*10^-6 M.

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3 years ago

B. The equilibrium constant for the reaction 2H2(g) + S2(g) 2H2S(g) is Keq = . (3 points)

eimsori [14]

Answer:

i. Keq=4157.99.

ii. More hydrogen sulfide will be produced.

Explanation:

Hello,

i. In this case, for the concentrations at equilibrium on the given chemical reaction, the equilibrium constant results:

$Keq=\frac{[H_2S]^2}{[H_2]^2[S_2]} =\frac{(0.97M)^2}{(0.051M)^2(0.087)} =4157.99$

ii. Now, by means of the Le Chatelier's principle, the addition of a reactant shifts the reaction towards products, it means that more hydrogen sulfide will be produced in order to reach equilibrium.

Best regards.

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3 years ago

Which subatomic particle determines the identity of an atom

Gelneren [198K]

The Protons determine the identity.

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4 years ago

Predict the product of this reaction <br><br> Al(s) + N2(g)—->

Rudik [331]

I attended the answer. I hope this helps you.

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3 years ago