An alloy of iron (54.7%), nickel (45.0%) and manganese (0.3%) has a density of 8.17 g/cc. How many iron atoms are there in a block of alloy measuring 10.0 cm x 20.0 cm x 15.0 cm?

Explanation

To solve the problem step by step, we will calculate the mass of the alloy, determine the mass of iron in the alloy, convert that mass into moles, and finally calculate the number of iron atoms.

### Step 1: Calculate the Volume of the Alloy
The volume of the block is given by the formula:
\[ \text{Volume} = \text{length} \times \text{width} \times \text{height} \]

Given dimensions:
- Length = 10.0 cm
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