A 1.582 g sample containing 71.47% calcium and 28.53% oxygen was used for an experiment.What is the equivalent mole of calcium from the sample?
To find the equivalent moles of calcium in the sample, we first need to determine the mass of calcium in the sample.
Mass of calcium = 1.582 g * 71.47% = 1.129 g
Next, we need to calculate the molar mass of calcium (Ca), which is approximately 40.08 g/mol.
Now, we can calculate the number of moles of calcium in the sample by dividing the mass of calcium by the molar mass of calcium:
Number of moles of calcium = 1.129 g / 40.08 g/mol ≈ 0.0282 mol
Therefore, the equivalent mole of calcium in the sample is approximately 0.0282 moles.