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Brilliant_brown [7]
3 years ago
11

What is the density at STP of the gas sulfur hexafluoride, SF6?

Chemistry
2 answers:
svetoff [14.1K]3 years ago
7 0

Answer:

Explanation:

There is a formula for this:

M = DRT/P where M = molar mass. This just derived from PV = nRT where you say n = grams/molar mass. However, just with this formula, we can get D which is density at STP (1 atm and 273K). We find that D = 6.52g/L.

jonny [76]3 years ago
3 0
The third one... 6.52 g/L
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Answer:

See explanation

Explanation:

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Percentage nitrogen = (2*14.007 amu/ 44.014 amu ) *100% = 63.6%

Percentage oxygen = (16 amu/44.014 amu) * 100% = 36.4 %

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b) Benzoic acid (C7H6O2) has a molar mass of 122.13 amu. It has 6 hydrogen atoms each with a mass of 1.01 amu; it has 7 carbon atoms each with a mass of 12.01amu and 2 oxygen atoms with a mass of 16.0 amu.

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Percentage carbon = (7*12.01 amu/ 122.13 amu)*100% = 68.8%

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Percentage oxygen = (16 amu/60.064amu)*100% = 26.6%

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