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laila [671]
3 years ago
9

A weather balloon containing helium with a volume of 410.0 L rises in the atmosphere and is cooled from 17∘

Chemistry
1 answer:
likoan [24]3 years ago
3 0

Answer:

V₂ = 1500 Liters ( 2 sig. figs.)

Explanation:

Given the following gas law variables:

P₁ = 110.0KPa           P₂ = 25KPa

V₁ = 410 Liters          V₂ = ?

T₁ = 17°C ( = 290K)   T₂ = -27°C  ( = 248K)

P₁V₁/₁T₁ = P₂V₂/T₂  =>  V₂ = V₁(P₁/P₂)(T₂/T₂)

V₂ = 410L(110.0KPa/25KPa)(248k/290K) = 1542 L (calc. ans.)

V₂ = 1500 Liters ( 2 sig. figs.)

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First, we need to determine the half reaction of magnesium. It would be expressed as:

Mg2+ + 2e- = Mg

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3 years ago
A common laboratory method for preparing a precipitate is to mix solutions containing the component ions. Does a precipitate for
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Answer:

CaF2 will not precipitate

Explanation:

Given

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Q = [Ca2+] [F-]^2\\= (5 * 10^{-4}) * (0.5* 10^-4)\\= 1.25 * 10^{-12}

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Answer:

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