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jeyben [28]
3 years ago
15

In science class, Jake mixed water with differing amounts of an unknown liquid. After mixing the liquids, he heated 20 millilite

rs (ml) of each mixture and observed how quickly it boiled. The table shows his results.​

Chemistry
1 answer:
Snowcat [4.5K]3 years ago
7 0

Answer:

decrease i had the same question in 8th grade u must be in ninth

Explanation:

ohh im not sure but i think its A

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Answer:

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When performing physical exercise, the heart rate, by what percentage can it be increased?
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Hydrogen sulfide decomposes according to the following reaction: 2H2S(g) ⇋ 2H2(g) + S2(g) Kc=9.30x10-8 at 700.°C.If 0.45 mol of
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Answer:

[H₂] = 1.61x10⁻³ M

Explanation:

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First we <u>calculate the initial concentration</u>:

0.45 molH₂S / 3.0L = 0.15 M

The concentrations at equilibrium would be:

[H₂S] = 0.15 - 2x

[H₂] = 2x

[S₂] = x

We <u>put the data in the Kc expression and solve for x</u>:

\frac{(2x^2) * x}{(0.15-2x)^2}=9.30x10^{-8}

\frac{4x^3}{0.0225-4x^2}=9.30*10^{-8}

We make a simplification because x<<< 0.0225:

\frac{4x^3}{0.0225} =9.30*10^{-8}

x = 8.058x10⁻⁴

[H₂] = 2*x = 1.61x10⁻³ M

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A reaction is spontaneous if delta G is <br> 1)positive <br> 2)negative <br> 3)zero
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