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Moles of Compounds

Moles of Compounds. A properly written compound shows the ratio of atoms in the compound. For example, sodium carbonate (Na 2 CO 3 ) shows that for every 1 compound there are 2 atoms of Na, 1 atom of C, and 3 atoms of O.

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Moles of Compounds

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  1. Moles of Compounds

  2. A properly written compound shows the ratio of atoms in the compound. For example, sodium carbonate (Na2CO3) shows that for every 1 compound there are 2 atoms of Na, 1 atom of C, and 3 atoms of O.

  3. This also works with the mole. For 1 mole of the compound, there are 2 moles of Na, 1 mole of C, and 3 moles of O. This information allows us to calculate the molar mass of the entire compound, often called the formula mass.

  4. The total molar mass of Na2CO3 is 105.9883 g.

  5. Once it is known that 1 mol of Na2CO3 = 105.9883 g, conversion factors can be made of this information: These conversion factors can then be used in other calculations.

  6. What is the molar mass for potassium oxide (K2O)?

  7. What is the molar mass for potassium oxide (K2O)? K2O = 2 x K + 1 x O

  8. What is the molar mass for potassium oxide (K2O)? K2O = 2 x K + 1 x O K2O = (2 x 39.0983 g) + (15.9994 g)

  9. What is the molar mass for potassium oxide (K2O)? K2O = 2 x K + 1 x O K2O = (2 x 39.0983 g) + (15.9994 g) K2O = 78.1966 g + 15.9994 g = 94.1960 g

  10. If you have 560.0 grams of K2O, how many moles do you have?

  11. If you have 560.0 grams of K2O, how many moles do you have?

  12. If you have 560 grams of K2O, how many moles do you have?

  13. If you have 560.0 grams of K2O, how many moles do you have?

  14. If you have 3.4 moles of K2O, how many grams do you have?

  15. If you have 3.4 moles of K2O, how many grams do you have?

  16. If you have 3.4 moles of K2O, how many grams do you have?

  17. If you have 3.4 moles of K2O, how many grams do you have?

  18. If you have 54.3 grams of cobalt(II) chloride, how many formula units (compounds) and how many atoms is this?

  19. If you have 54.3 grams of cobalt(II) chloride, how many formula units (compounds) and how many atoms is this? 58.93g + (2 x 35.45 g)

  20. If you have 54.3 grams of cobalt(II) chloride, how many formula units (compounds) and how many atoms is this?

  21. If you have 54.3 grams of cobalt(II) chloride, how many formula units (compounds) and how many atoms is this?

  22. If you have 54.3 grams of cobalt(II) chloride, how many formula units (compounds) and how many atoms is this?

  23. If you have 54.3 grams of cobalt(II) chloride, how many formula units (compounds) and how many atoms is this?

  24. If you have 54.3 grams of cobalt(II) chloride, how many formula units (compounds) and how many atoms is this?

  25. If you have 54.3 grams of cobalt(II) chloride, how many formula units (compounds) and how many atoms is this?

  26. If you have 54.3 grams of cobalt(II) chloride, how many formula units (compounds) and how many atoms is this?

  27. If you have 54.3 grams of cobalt(II) chloride, how many formula units (compounds) and how many atoms is this?

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