kingofguns2826
03.12.2020 •
Chemistry
A sample of krypton gas collected at STP occupies a volume of 14.5 L. How many moles of gas does the sample contain?
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Ответ:
N₂O₂
Explanation:
The empirical formula NO tells us that the number of Nitrogen atoms will always be equal to the number of Oxygen atoms.
The molar mass of the simplest compound, NO, would be:
Molar Mass of NO = Molar Mass of N + Molar Mass of O = 30 g/molWe divide the molar mass of the problem compound by the molar mass of the simplest compound:
59.98 / 30 ≅ 2This means we multiply the empirical formula times 2:
The molecular formula is N₂O₂