2 years ago

Calcium and bromine have formed a bond. Leading up to this, calcium gave up electrons. It was a(n) ____.

Chemistry

1 answer:

Savatey [412]2 years ago

7 0

Answer:

C. Positive Ion

Explanation:

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Arrange the following elements in order of decreasing ionization energy: Cl, Si, P, Ar *

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Calcium is a group 2 element. Chlorine is a group 7 element. They form an ionic compound called

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Estimate the molar mass of a gas that effuses at 1.80 times the effusion rate of carbon dioxide. answer in units of g/mol.

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From Grahams Law the rates of effusion of two gases are inversely proportional to the square roots of their molar masses at the same temperature and pressure.
Therefore; R1/R2 = √mm2/√mm1
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Hence; 1.8 = √(44/x
3.24 = 44/x
x = 44/3.24
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Therefore, the molar mass of the other gas is 13.58 g/mol

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3 years ago