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sergiy2304 [10]
3 years ago
11

a sample of an unknown metal has a mass of 21.6g and volume of an 8.00cm3 calculate the density of the unknown metal

Chemistry
1 answer:
Strike441 [17]3 years ago
4 0

Answer:

<h2>2.70 g/cm³</h2>

Explanation:

The density of a substance can be found by using the formula

density =  \frac{mass}{volume} \\

From the question we have

density =  \frac{21.6}{8}  \\  = 2.7

We have the final answer as

<h3>2.70 g/cm³</h3>

Hope this helps you

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7 0
3 years ago
The rate of effusion of an unknown gas was measured and found to be 11.9 mL/min. Under identical conditions, the rate of effusio
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According to the Graham's law, the rate of effusion of gas is inversely proportional to the square root of the molar mass of gas.

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(\frac{R_1}{R_2})=\sqrt{\frac{M_2}{M_1}}       ..........(1)

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(\frac{11.9\text{ mL }min^{-1}}{14.0\text{ mL }min^{-1}})=\sqrt{\frac{32g/mole}{M_1}}

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