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This worksheet asks for the calculation of percent composition for each compound listed. To find percent composition, you follow this formula for each element in a compound:

\[
\text{Percent Composition of Element} = \frac{\text{Mass of Element in 1 mole of compound}}{\text{Molar Mass of compound}} \times 100
\]

Here’s a general outline for solving the problems:

1. **Find the molar mass** of each compound by summing the atomic masses of all atoms in the compound. Atomic masses can be found on the periodic table.
   
2. **Calculate the mass of each element** in the compound.

3. **Use the formula above** to find the percent composition of each element.

Would you like me to walk you through the steps for the first compound (KMnO₄), or any other specific one from the worksheet?



Determine the percentage composition of each compound listed in the worksheet. This includes compounds like KMnO₄, HCl, Mg(NO₃)₂, and others.

This worksheet helps students calculate the percent composition of various chemical compounds like KMnO₄, HCl, and Mg(NO₃)₂. It covers key concepts such as molar mass, atomic mass, and stoichiometry, ideal for high school chemistry students.

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