Final answer:
To determine the percent of calcium ion in Ca³(PO4)₂, calculate the molar mass, divide the molar mass of calcium by the molar mass of the compound, and multiply by 100.
Step-by-step explanation:
The percent of calcium ion in Ca³(PO4)₂ can be calculated by finding the molar mass of calcium ion and dividing it by the molar mass of the entire compound, then multiplying by 100 to get the percentage.
Molar mass of Ca³(PO4)₂ = (3 * molar mass of Ca) + (2 * molar mass of PO4)
Percent of calcium ion = (molar mass of Ca / molar mass of Ca³(PO4)₂) * 100
Once you calculate the molar masses and perform the division, round the answer to four significant figures to get the percent of calcium ion.
Learn more about Calcium ion percentage in a compound