Compute the difference between `10^(3)` moles each of calcium atoms and calcium ions. Which one is heavier ? ( Mass of an electron `= 9.1 xx 10^(-31) kg `. )

Explanation

To compute the difference between \(10^{3}\) moles of calcium atoms and calcium ions, and to determine which one is heavier, we can follow these steps:

### Step 1: Understand the composition of calcium atoms and ions
Calcium (Ca) is an alkaline earth metal with an atomic number of 20. A neutral calcium atom has 20 protons and 20 electrons. When it becomes a calcium ion (Ca²⁺), it loses 2 electrons, resulting in 20 protons and 18 electrons.

### Step 2: Calculate the mass of calcium atoms
The molar mass of calcium (Ca) is approximately 40.08 g/mol. Therefore, the mass of \(10^{3}\) moles of calcium atoms can be calculated as follows:

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