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Zanzabum
3 years ago
10

The temperature of the diatomic hydrogen gas sample is increased to 100∘c. the root-mean-square speed vrms for diatomic hydrogen

at 100∘c is:
Chemistry
1 answer:
marin [14]3 years ago
8 0
In physical chemistry, there is an equation for the root mean square speed, or also known in abbreviated form of rms. The equation is:

rms = √(3RT/M)
where
R = 8.314 J/mol-K
T is the absolute temp
M is the molar mass; For H₂, M = 0.002 kg/mol

rms = √(3(8.314)(100+273)/(2))
<em>rms = 2,156.78 m/s</em>
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Which of the following is NOT a reason for the experimental volume of the flask to be incorrect?
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2

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4 0
3 years ago
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garik1379 [7]

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7 0
3 years ago
What is the concentration of H+ ions at a pH = 2?
erastova [34]

Answer:

0.01M = [H⁺]; 1x10⁻¹²M = [OH⁻]; Ratio is: 1x10¹⁰

Explanation:

pH is defined as -log [H⁺]

For a pH of 2 we can solve [H⁺] as follows:

pH = -log [H⁺]

2 = -log [H⁺]

10^-2 = [H⁺]

<h3>0.01M = [H⁺]</h3>

Using Keq of water:

Keq = 1x10⁻¹⁴ = [H⁺] [OH⁻]

1x10⁻¹⁴ / 0.01M = [OH⁻]

<h3>1x10⁻¹²M = [OH⁻]</h3><h3 />

The ratio is:

[H⁺] / [OH⁻] = 0.01 / 1x10⁻¹² =

<h3>1x10¹⁰</h3>

7 0
2 years ago
Read 2 more answers
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