Determin the number of oxygen atmos in 1.75kg of potassium sulfate.
see above.
Three posts up from yours.
To determine the number of oxygen atoms in 1.75 kg of potassium sulfate (K2SO4), you will need to use the concept of moles and Avogadro's number. Here's how you can calculate it step by step:
1. Find the molar mass of potassium sulfate (K2SO4):
- Atomic mass of potassium (K) = 39.10 g/mol
- Atomic mass of sulfur (S) = 32.07 g/mol
- Atomic mass of oxygen (O) = 16.00 g/mol
- Molar mass of K2SO4 = (2 * 39.10 g/mol) + (1 * 32.07 g/mol) + (4 * 16.00 g/mol) = 174.26 g/mol
2. Convert the mass of potassium sulfate to moles:
- Moles of K2SO4 = mass of K2SO4 / molar mass of K2SO4
- Moles of K2SO4 = 1.75 kg / (174.26 g/mol) = 10.04 mol
3. Determine the number of oxygen atoms:
- In each molecule of potassium sulfate (K2SO4), there are four oxygen atoms.
- So, to calculate the number of oxygen atoms, multiply the moles of K2SO4 by the number of oxygen atoms per molecule:
- Number of oxygen atoms = moles of K2SO4 * (4 oxygen atoms / 1 K2SO4 molecule)
- Number of oxygen atoms = 10.04 mol * 4 = 40.16
Therefore, in 1.75 kg of potassium sulfate, there are approximately 40.16 oxygen atoms.