calculate the # of oxygen atoms in 30 grams of CaSO4
#O atoms= 4 times the moles of CaSO4 * avagradoo's number. How many moles of CaSO4 is in 30 g?
there is 0.22 mol in 30 grams of CaS)4
To calculate the number of oxygen atoms in 30 grams of CaSO4, we first need to find the number of moles of CaSO4 in 30 grams.
To do this, we can use the formula: Moles = Mass / Molar mass
The molar mass of CaSO4 can be calculated using the atomic masses of calcium (Ca), sulfur (S), and four oxygen (O) atoms.
Molar mass of Ca = 40.08 g/mol
Molar mass of S = 32.06 g/mol
Molar mass of O = 16.00 g/mol
Adding them up:
Molar mass of CaSO4 = (1 * molar mass of Ca) + (1 * molar mass of S) + (4 * molar mass of O)
= (1 * 40.08 g/mol) + (1 * 32.06 g/mol) + (4 * 16.00 g/mol)
= 136.14 g/mol
Now we can calculate the moles of CaSO4 in 30 grams:
Moles = Mass / Molar mass
= 30 g / 136.14 g/mol
≈ 0.22 mol
Since the formula CaSO4 has four oxygen atoms, we can now calculate the number of oxygen atoms:
#O atoms = 4 times the moles of CaSO4 * Avogadro's number
Avogadro's number is approximately 6.022 x 10^23.
#O atoms = 4 * 0.22 mol * 6.022 x 10^23 atoms/mol
≈ 5.30 x 10^23 oxygen atoms
Therefore, there are approximately 5.30 x 10^23 oxygen atoms in 30 grams of CaSO4.