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zalisa [80]
4 years ago
7

Calculate the percent of Cl in KClO4

Chemistry
1 answer:
sergejj [24]4 years ago
7 0

Answer:

25.6 %.

Explanation:

  • To calculate the % of Cl in KClO₄:

<em>% Cl = [Atomic mass of (Cl)/molar mass of KClO₄] x 100</em> = [(35.5 g/mol)/(138.55 g/mol)] x 100 = <em>25.62 % ≅ 25.6 %.</em>

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How can a montain range cause a large dessert?
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3 0
4 years ago
Why do liquids flow? A. Liquid particles are wet. B. Liquid particles are smooth. C. Liquid particles are not fixed in place. D.
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3 years ago
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kupik [55]

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6 0
3 years ago
When 7.94 g of xylene was added to 132.5 g of cyclohexane, the freezing point of the solution was -4.9oC. What is the molar mass
777dan777 [17]
Answer is: molar mass of xylene 106,18 g/mol.
m(xylene) = 7,94 g.
m(cyclohexane) = 132,5 g.
T (solution) = - 4,9 °C.
Tf(cyclohexane) = 6,5 °C, frezing point.
Kf(cyclohexane) = 20,2 K·kg/mol; cryoscopic constant.
ΔT(solution) = 6,5°C - (-4,9°C) = 11,4°C = 11,4 K.
M(xylene) = Kf · m(xylene) ÷ m(cyclohexane) · ΔT(solution).
M(xylene) = 20,2 K·kg/mol · 7,94 g ÷ 0,1325 kg · 11,4 K.
M(xylene) = 106,18 g/mol.


6 0
3 years ago
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