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Sophie [7]
3 years ago
15

Which refers to the rate of change in velocity?

Chemistry
2 answers:
Serjik [45]3 years ago
7 0
ACCELERATION IS YOUR ANSWER
jek_recluse [69]3 years ago
5 0

Answer:

Acceleration

Explanation:

Acceleration Is the rate change in velocity

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2 years ago
Under certain conditions Argon gas diffuses at a rate of 3.2 cm per second under the same conditions an unknown gas diffuses at
kozerog [31]

Answer:

20 g/mol

Explanation:

We can use <em>Graham’s Law of diffusion</em>:

The rate of diffusion (<em>r</em>) of a gas is inversely proportional to the square root of its molar mass (<em>M</em>).

r = \frac{1 }{\sqrt{M}}

If you have two gases, the ratio of their rates of diffusion is

\frac{r_{2}}{r_{1}} = \sqrt{\frac{M_{1}}{M_{2}}}

Squaring both sides, we get

(\frac{r_{2}}{r_{1}})^{2} = \frac{M_{1}}{M_{2}}

Solve for <em>M</em>₂:

M_{2} = M_{1} \times (\frac{r_{1}}{r_{2}})^{2}

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= \text{39.95 g/mol} \times 0.506 = \textbf{20 g/mol}

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3 years ago
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