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Reptile [31]
3 years ago
14

Mezclar mantequilla y azúcar es químico oh físico ?

Chemistry
1 answer:
klio [65]3 years ago
8 0
<h3>answer:</h3><h3>es un cambio fisico</h3>

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True or false, The atomic number of an element is a whole number that decreases as you read across each row of
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What is the volume, in liters, of 6.8 mol of Kr gas at STP?
Virty [35]

Answer:

\boxed {\boxed {\sf D. \ 152 \ L}}

Explanation:

Any gas at standard temperature and pressure (STP) has a volume of 22.4 liters per mole or 22.4 L/mol. We can create a proportion with this value.

\frac {22.4 \ L \ Kr}{1 \ mol \ Kr}

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6.8 \ mol \ Kr *\frac {22.4 \ L \ Kr}{1 \ mol \ Kr}

The units of moles of krypton will cancel.

6.8 *\frac {22.4 \ L \ Kr}{1 }

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152.32 \ L \ Kr

If we round to the nearest whole number, the 3 in the tenths place tells us to leave the 2 in the ones place.

152 \ L \ Kr

6.8 moles of krypton gas at standard temperature and pressure is equal to <u>152 liters</u>.

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3 years ago
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