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2 years ago

Which describes the composition of matter in the figure C?

Chemistry

1 answer:

jok3333 [9.3K]2 years ago

3 0

Answer:

The answer to your question is Mixture

Explanation:

Element is an substance whose atoms are all the same because all the atoms

have the same number of protons, neutrons and electrons.

Compound is a substance formed when 2 or more atoms combined.

Mixture is a substance formed by 2 or more different kinds of atomos or

compounds.

Phase is a state of matter like solid, liquid or gas.

According to the definitions, we conclude that the figure C is a Mixture.

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3 years ago

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In the reaction CuO(s) + CO2(g) → CuCO3(s), a. CO2 is the Lewis acid and CuCO3 is its conjugate base. b. O2– acts as a Lewis bas

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<u>Answer:</u> The correct answer is Option d.

<u>Explanation:</u>

According to Lewis acid-base concept:

The substance which is donating electron pair is considered as Lewis base and the substance which is accepting electron pair is considered as Lewis acid.

For the given chemical reaction:

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2 years ago

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2 years ago

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3 years ago

Which gas will effuse at the rate closest At a particular pressure and temperature, nitrogen gas effuses at the rate of 79mLs. U

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Answer : The rate of effusion of sulfur dioxide gas is 52 mL/s.

Solution :

According to the Graham's law, the rate of effusion of gas is inversely proportional to the square root of the molar mass of gas.

$R\propto \sqrt{\frac{1}{M}}$

or,

$(\frac{R_1}{R_2})=\sqrt{\frac{M_2}{M_1}}$ ..........(1)

where,

$R_1$ = rate of effusion of nitrogen gas = $79mL/s$

$R_2$ = rate of effusion of sulfur dioxide gas = ?

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$M_2$ = molar mass of sulfur dioxide gas = 64 g/mole

Now put all the given values in the above formula 1, we get:

$(\frac{79mL/s}{R_2})=\sqrt{\frac{64g/mole}{28g/mole}}$

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Therefore, the rate of effusion of sulfur dioxide gas is 52 mL/s.

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2 years ago