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ivanzaharov [21]
3 years ago
14

What mass of dinitrogen monoxide, N2O, contains the same number of molecules as 3.00 g of trichlorofluoromethane, CCl3F?

Chemistry
1 answer:
erica [24]3 years ago
3 0

Answer:

0.9612 g

Explanation:

First we <u>calculate how many moles are there in 3.00 g of CCl₃F</u>, using its <em>molar mass</em>:

  • 3.00 g CCl₃F ÷ 137.37 g/mol = 0.0218 mol CCl₃F

Now, we need to calculate how many grams of N₂O would have that same number of molecules, or in other words, <em>the same amount of moles</em>.

Thus we <u>calculate how many grams would 0.0218 moles of N₂O weigh</u>, using the <em>molar mass of N₂O</em> :

  • 0.0218 mol N₂O * 44.013 g/mol = 0.9612 g N₂O
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Answer:

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3 0
3 years ago
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levacccp [35]
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7 0
3 years ago
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DanielleElmas [232]
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Sum of oxidation numbers in all elements = Charge of the compound.

Here we have 1Fe , 4CO and 2I
hence we can find the oxidation state as;
 x + 4*0 + 2*(-1) = 0
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Same as we can find the oxidation state (y) of Fe in Fe(CO)₅(s).
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5 0
3 years ago
Fluorine-21 has a half life of approximately 5 seconds. You have 340 grams, what fraction of the original nuclei would remain af
madreJ [45]
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Fraction = P(t)/Pi              = P(20)/Pi              =21.25/340              =1/16
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Hope this method helps! (This is my answer btw, I think you may have accidentally posted twice?)
7 0
3 years ago
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