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2 years ago

What is the percent by mass of potassium in K3Fe(CN)6?

Chemistry

1 answer:

SSSSS [86.1K]2 years ago

6 0

Answer:

Mass percent composition of K = mass contribution of K/molecular mass of K3Fe(CN)6 x 100% Mass percent composition of K = 117.30 g/mol/329.27 g/mol x 100% Mass percent composition of K = 0.3562 x 100% Mass percent composition of K = 35.62%

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Choose all the answers that apply.

ziro4ka [17]

Answer:

1, 5, 3

Explanation:

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2 years ago

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How are the environments of a desert and a tundra different?

klasskru [66]

B. A Tundra is less humid than a desert.

Reasoning: Tundra’s experience low temperatures while deserts experience hot/humid temperatures.

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2 years ago

Helium gas in a balloon occupies 2.5 L at 300.0 K. The balloon is dipped into liquid nitrogen that is at a temperature of 77.0 K

Rom4ik [11]

Answer:

A. 0.641 L

Explanation:

Given data:

V1 = 2.5 L

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To find:

V2= ?

Formula :

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3 years ago

An ideal gas undergoes an expansion from the initial state described by Pi, Vi, T to a final state described by Pf, Vf, T in (a)

cricket20 [7]

Answer:

A) m = $\frac{p_f(V_f-V_i)}{gh}$

B) m = $- n R T (ln \frac{V_f }{V_i})\frac{1}{gh}$

Explanation:

A) a process at the constant external pressure Pf,

We Know that

W = mgh-------------------------(1)

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W= $- n R T( ln \frac{V_f }{ V_i})$

From EQ(3)

mgh= $- n R T( ln \frac{V_f }{ V_i})$

m = $- n R T (ln \frac{V_f }{V_i})\frac{1}{gh}$

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3 years ago

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prohojiy [21]

Because they are different Tv shows

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3 years ago