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andriy [413]
4 years ago
6

Find the molar mass of oxygen gas

Chemistry
1 answer:
Mazyrski [523]4 years ago
6 0
Molar mass of oxygen = mass of an oxygen atom×2 = 15.999×2 ≈16×2 = 32
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PH of a solution will be <span>higher than 7
</span>
Ammonium cyanide is a salt formed by hydrogen cyanide and ammonia. Ammonia is a weak base and hydrogen cyanide is a weak acid. 
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Ka(HCN) = 4.9 x × 10⁻¹⁰

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Let's first calculate Ka for NH₄⁺: 
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Then, Kb for CN⁻:

Kb(CN⁻) x Ka(HCN) = pKw

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