Which has more number of atoms, 100 grams of sodium or 100 grams of iron (given, atomic mass of Na = 23 u, Fe = 56 u)?

Explanation

To determine which has more number of atoms between 100 grams of sodium (Na) and 100 grams of iron (Fe), we can use the concept of moles and Avogadro's number. Here’s a step-by-step solution:

### Step 1: Understand the Molar Mass
- The atomic mass of sodium (Na) is 23 u (grams/mole).
- The atomic mass of iron (Fe) is 56 u (grams/mole).

### Step 2: Calculate the Number of Moles
- To find the number of moles in 100 grams of each substance, we use the formula:
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