If a sample of K 2 O is found to contain 6.37 10 -3 mol of O atoms how many moles of K 2 O formula units are present?
- If a sample of K2O is found to contain 6.37 · 10-3 mol of O atoms how many moles of K2O formula units are present? Express your answer in scientific notation.
- 32-2423
- How many PO43- ions are present in 6.34 · 1021 K3PO4 formula units ? Express your answer in scientific notation.
- 322432
- 24
- How many moles of AsO43- ions are present in 1.23 · 1021 Ca3(AsO4)2 formula units ? Express your answer in scientific notation.
