2 years ago

10 points

Chemistry

1 answer:

Oduvanchick [21]2 years ago

7 0

Answer:

table C will be the correct answer

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Which of the following statements about Bohr's model of the atom is true? Bohr's model explains the chemical behavior of all ato

dsp73

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Which choice confirms that one air mass is being replaced by another air mass in a given area?

Sedaia [141]

Answer:

Answer is A

Explanation:

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2 years ago

The exhaust gas from an automobile contains 3% by volume of carbon monoxide (CO). Express this concentration in mg/m3 at 25oC an

ser-zykov [4K]

Answer:

$24540\frac{mg}{m^3}$

Explanation:

Hello,

In this case, since the 3% by volume is represented as:

$\frac{3L\ CO}{L\ gas}$

By using the ideal gas equation we compute the density of CO:

$\rho =\frac{MP}{RT} =\frac{28g/mol*1atm}{0.082\frac{atm*L}{mol*K}*298K}= 0.818g/L$

Then we apply the conversion factors as follows:

$=\frac{3L\ CO}{100L\ gas}*\frac{0.818g\ CO}{1L\ CO} *\frac{1000mg\ CO}{1g\ CO} *\frac{1000L\ gas}{1m^3\ gas} \\\\=24540\frac{mg}{m^3}$

Regards.

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3 years ago