Question

Calculate the relative atomic mass (RAM) of Na
2
​
CO
3
​
.
Given:
• Na (Sodium) = 23
• C (Carbon) = 12
• O (Oxygen) = 16

Answer 1

To calculate the relative atomic mass (RAM) of sodium carbonate (Na\(_2\)CO\(_3\)), we will add the contributions from each of the elements in the formula.

The formula for sodium carbonate indicates that it contains:
- 2 sodium (Na) atoms
- 1 carbon (C) atom
- 3 oxygen (O) atoms

We will calculate the RAM using the given atomic masses:

1. Sodium (Na): 23
- Contribution from sodium:
\[
2 \times 23 = 46
\]

2. Carbon (C): 12
- Contribution from carbon:
\[
1 \times 12 = 12
\]

3. Oxygen (O): 16
- Contribution from oxygen:
\[
3 \times 16 = 48
\]

Now we can sum these contributions to find the total RAM of Na\(_2\)CO\(_3\):
\[
\text{Total RAM} = 46 + 12 + 48 = 106
\]

Thus, the relative atomic mass of sodium carbonate (Na\(_2\)CO\(_3\)) is **106**.