if you have 720 g of the compound CaBr2 how many moles of it do you have
To determine the number of moles of the compound CaBr2, you need to use its molar mass. Let me explain the steps to calculate this:
Step 1: Find the molar mass of CaBr2
- The molar mass of any compound can be calculated by adding up the atomic masses of each element present in the compound.
- The atomic mass of calcium (Ca) is 40.08 g/mol, and the atomic mass of bromine (Br) is 79.90 g/mol.
- Since CaBr2 has two bromine atoms, you need to multiply the atomic mass of bromine by 2.
- Therefore, the molar mass of CaBr2 is:
Molar mass = (1 * atomic mass of calcium) + (2 * atomic mass of bromine)
Molar mass = (1 * 40.08 g/mol) + (2 * 79.90 g/mol)
Step 2: Calculate the moles of CaBr2
- Now that you know the molar mass of CaBr2, you can calculate the number of moles using the given mass.
- Use the formula: Moles = Mass / Molar mass
- In this case, Mass = 720 g (given)
- Moles = 720 g / (molar mass of CaBr2)
By following these steps, you can calculate the number of moles of CaBr2 using the given mass of 720 g.