How many moles are 400 g of Ca(HSO4)2
mol = g/molar mass
To find the number of moles in a given mass of a substance, you need to use the concept of molar mass.
Here's how you can calculate the number of moles:
1. Determine the molar mass of Ca(HSO4)2.
- Calculate the molar mass of each element in the compound: Ca (40.08 g/mol), H (1.01 g/mol), S (32.07 g/mol), and O (16.00 g/mol).
- Multiply the molar mass of each element by its respective subscript in the formula: Ca (1), H (2), S (1), O (4).
- Add up the molar masses of all the elements to get the molar mass of Ca(HSO4)2.
2. Calculate the number of moles.
- Divide the given mass by the molar mass of Ca(HSO4)2.
- In this case, divide 400 g by the molar mass of Ca(HSO4)2.
Let's follow these steps to find the answer:
1. Molar mass of Ca(HSO4)2:
- Ca: 40.08 g/mol × 1 = 40.08 g/mol
- H: 1.01 g/mol × 2 = 2.02 g/mol
- S: 32.07 g/mol × 1 = 32.07 g/mol
- O: 16.00 g/mol × 4 = 64.00 g/mol
- Total molar mass: 40.08 g/mol + 2.02 g/mol + 32.07 g/mol + 64.00 g/mol = 138.17 g/mol
2. Number of moles:
- Moles = 400 g ÷ 138.17 g/mol
Plug in the values and perform the calculation to find the number of moles.