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3 years ago

When an atom of lithium loses an electron the atom becomes a

Chemistry

2 answers:

Ymorist [56]3 years ago

5 0

Positive ion with a radius smaller than the radius of the atom

Liula [17]3 years ago

4 0

Positive with a smaller atomic radius and ionic radius

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2 years ago

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3 years ago

What is the chemical formula of (Sodium hydroxide ) ??

Margaret [11]

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what is the chemical formula of (Sodium hydroxide ) ??

Sodium hydroxide, Sodium oxidanide

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$\large\tt\:⚘ \: MishiChaeYoon \: ⚘$

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3 years ago

A vessel of volume 100ml contains 10% of oxygen and 90% of an unknown gas. The gases diffuses in 86 second through a small hole

swat32

The molecular weight of unknown gas : 23.46 g/mol

<h3>Further explanation</h3>

Given

A vessel contains 10% of oxygen and 90% of an unknown gas.

diffuses rate of mixed gas = 86 s

diffuses rate of O₂ = 75 s

Required

the molecular weight of unknown gas (M)

Solution

The molecular weight of mixed gas :(M O₂=32 g/mol)

$\tt 0.1\times 32+0.9\times M=3.2+0.9M$

Graham's Law :

$\tt \dfrac{r_{O_2}}{r_{mixed~gas}}=\sqrt{\dfrac{M_{mixed}}{M_{O_2}} }\\\\\dfrac{75}{86}=\sqrt{\dfrac{3.2+0.9M}{32} }\\\\0.76=\dfrac{3.2+0.9M}{32}\\\\24.32=3.2+0.9M\\\\21.12=0.9M\rightarrow M=23.46~g/mol$

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3 years ago

Explain phase changes and the relationship between kinetic energy and intermolecular forces.

White raven [17]

Answer:

If we increase the temperature, the average kinetic energy increases, and that means the molecules are more likely to have enough kinetic energy to go into or stay in the gas phase. (Thus, they are called intermolecular forces, to separate them from the forces inside molecules that hold the molecules together.)

Explanation:

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3 years ago