2 years ago

The Law of Conservation of Matter describes how mass is not lost during a chemical reaction.

Chemistry

2 answers:

weeeeeb [17]2 years ago

7 0

False, it states that matter can be nether created nor destroyed

crimeas [40]2 years ago

4 0

Answer:

false

Explanation:

because it tells you the matter can't be created or destroyed.

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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:

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

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Snezhnost [94]

Its A.It can sometimes reject important new ideas or novel techniques.<span>
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3 years ago

Which two chemical elements make up earths atmosphere

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What is required for two atoms to share electrons equally in a chemical bond?

natulia [17]

Answer:

Explanation:

It said there "share electrons" so the two atoms should be non-metals

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