Multiple Choice 1 point How many atoms are in a 25.0g sample of Calcium (Ca)? 3.50times 10^23atoms 9.51times 10^23atoms 2.10times 10^23atoms 3.75times 10^23atoms

To determine the number of atoms in a 25.0g sample of Calcium (Ca), we need to follow these steps:1. Find the molar mass of Calcium (Ca).2. Calculate the number of moles of Calcium in the 25.0g sample.3. Use Avogadro's number to find the number of atoms.Step 1: Find the molar mass of Calcium (Ca).The molar mass of Calcium (Ca) is 40.08 g/mol.Step 2: Calculate the number of moles of Calcium in the 25.0g sample.Number of moles = mass / molar massNumber of moles = 25.0g / 40.08 g/molNumber of moles ≈ 0.625 molStep 3: Use Avogadro's number to find the number of atoms.Avogadro's number is 6.022 x 10^23 atoms/mol.Number of atoms = number of moles x Avogadro's numberNumber of atoms ≈ 0.625 mol x 6.022 x 10^23 atoms/molNumber of atoms ≈ 3.76 x 10^23 atomsTherefore, the correct answer is: