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uysha [10]
3 years ago
7

The ratio of the initial to the final pressure of a given mass of gas is 1:1.5. Calculate the final volume of the gas if the ini

tial volume was 300cm^3 at the same temperature. ​
Chemistry
1 answer:
Paladinen [302]3 years ago
6 0

Answer:

Explanation:

Ratio of volume 1:1.5 = 300/v

1/1.5 = 300/v

Cross multiply

v = 1.5 × 300

V = 450cm^3

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I think it’s like this.

C+2O→CO2

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Explain three factors that can affect the size of a line in a spectrum.
Sunny_sXe [5.5K]

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Explanation:

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3 years ago
Calculate ∆G ◦ r for the decomposition of mercury(II) oxide 2 HgO(s) → 2 Hg(ℓ) + O2(g) ∆H◦ f −90.83 − − (kJ · mol−1 ) ∆S ◦ m 70.
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Answer:

4. +117,1 kJ/mol

Explanation:

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For the reaction:

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As ΔHf of Hg(l) and ΔHf O₂(g) are 0:

ΔHr: - 2ΔHf HgO(s) = <u><em>181,66 kJ/mol</em></u>

<u><em /></u>

In the same way ΔSr is:

ΔSr= 2ΔS° Hg(l) + ΔS° O₂(g) - 2ΔS° HgO(s)

ΔSr= 2* 76,02J/Kmol + 205,14 J/Kmol - 2*70,19 J/Kmol

ΔSr= 216,8 J/Kmol = <em><u>0,216 kJ/Kmol</u></em>

Thus, ΔGr at 298K is:

ΔGr = 181,66 kJ/mol - 298K*0,216kJ/Kmol

ΔGr = +117,3 kJ/mol ≈ <em>4. +117,1 kJ/mol</em>

<em></em>

I hope it helps!

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3 years ago
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Answer:

c

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i read a artical on him and it said

love yall;]

6 0
3 years ago
Perform the following mathematical operation and report the answer to the appropriate number of significant figures. 5.4-4.21
konstantin123 [22]

Answer:

1.2   ( two significant digits)

Explanation:

5.4 - 4.21        answer should only have the the number of significant digits as the number in the equation with the least number of significant digits... in this case   5.4   is only two significant digits....so the answer should only have two significant digits

5.4 - 4.21 = 1.19     round to two digits = 1.2    

3 0
1 year ago
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