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Ainat [17]
3 years ago
6

What is the physical state of nitrogen at -200c

Chemistry
1 answer:
ziro4ka [17]3 years ago
7 0
Nitrogen, for example, is a gas that liquefies at about −200° C and freezes around −210° C, whereas bismuth is a solid melting at 271° C and boiling at about 1,560° C.
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What tuberculosis means "
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If you start with 0.30 m mn2 , at what ph will the free mn2 concentration be equal to 4.6 x 10-11 m?
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If you start with 0.30 m Mn₂ , at 12.5 pH, free Mn₂ concentration be equal to 4.6 x 10⁻¹¹ m

Initial molarity of Mn₂ = 0.30 M

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pH = ?

Ksp [Mn(OH)₂] = 4.6 x 10⁻¹⁴ (standard value)

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    Mn(OH)₂   →    Mn⁺² + 2OH⁻

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We will calculate the concentration of OH⁻ by using Ksp expression

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    [OH⁻]² = 4.6 x 10⁻¹⁴ / 4.6 x 10⁻¹¹

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Calculate the pOH

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Now calculate pH

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   pH = 14 - 1.5

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You can also learn about molarity from the following question:

brainly.com/question/14782315

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Calculate the molar mass for each of the following compounds 7. PbSO
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14. Zn(C2H3O2)2

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