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RSB [31]
2 years ago
6

What is the metal cation in K,SO,? (cation is pronounced cat-ion and refers to a positively charged ion)

Chemistry
1 answer:
slamgirl [31]2 years ago
8 0

Answer:

Potassium cation = K⁺²

Explanation:

The metal cation in K₂SO₄ is K⁺². While the anion is SO₄²⁻.

All the metals have tendency to lose the electrons and form cation. In given compound the metal is potassium so it should form the cation. The overall compound is neutral.

The charge on sulfate is -2. While the oxidation state of potassium is +1. So in order to make compound overall neutral there should be two potassium cation so that potassium becomes +2 and cancel the -2 charge on sulfate and make the charge on compound zero.

2K⁺²  ,  SO₄²⁻

K₂SO₄

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3 years ago
A 720. cm^3 vessel contains a mixture of Ar and Xe. If the mass of the gas mixture is 2.966 g at 25.0°C and the pressure is 760.
sleet_krkn [62]

Explanation:

The given data is as follows.

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Using ideal gas equation, we will calculate the number of moles as follows.

                                PV = nRT

   Total atoms present (n) = \frac{PV}{RT}

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Hence, total number of moles will be as follows.

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Also,      40x + 131y = 2.966

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Therefore, mole fraction will be calculated as follows.

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Therefore, the mole fraction of Xe is 0.67.

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