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bekas [8.4K]
2 years ago
12

Someone please help me

Chemistry
1 answer:
ehidna [41]2 years ago
8 0
I hop this will help u

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A 1.00 liter solution contains 0.31 M hydrocyanic acid and 0.40 M sodium cyanide. If 0.100 moles of barium hydroxide are added t
andriy [413]

Explanation:

acid --> HCN

base --> KCN

now

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we know that

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A 0.595 g sample of a metal, M, reacts completely with sulfuric acid according to the reaction M ( s ) + H 2 SO 4 ( aq ) ⟶ MSO 4
zalisa [80]

Answer:

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Explanation:

  • M(s) + H2SO4(aq) → MSO4(aq) + H2(g)

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∴ P atm = 1.0079 bar

∴ PvH2O(25°C) = 0.03167 bar

Graham´s law:

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∴ nH2(g) = PV/RT

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⇒ nH2(g) = 9.1082 E-3 mol

⇒ n M(s) = ( 9.1082 E-3 mol H2(g) )(mol M(s)/mol H2(g))

⇒ n M(s) = 9.1082 E-3 mol

∴ molar mass M(s) [=] g/mol

⇒ molar mass M(s) =   (0.595 g) / (9.1082 E-3 mol)

⇒ molar mass M(s) = 65.326 g/mol

7 0
3 years ago
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