Practice problems

1. Calculate the kilogram atoms of Carbon which weighs 36 kg. (A: 3)
2. Calculate kg of Na of which amount is specified as 3 katom.  (A: 69)
3. Calculate the molecular weight of H2SO4, Na2CO3 and KMnO4 (A: 98, 106, 158)
4. How many kilograms of ethane are there in 210 kmol (A: 6300)
5. Convert 88 kg of carbon dioxide into its kmol (A: 2)
6. Calculate the moles of Oxygen present in 500 g. (A: 15.625)
7. Convert 499 g of CuSO4.5H2O into moles (A: 2)
8. How many moles of H2SO4 will contain 64 kg of S (A: 2)
9. How many moles of K2CrO3 will contain 117 kg of K (A: 1.5)
10. How many kilograms of carbon are present in 64 kg of methane (A: 48)
11. Calculate equivalent moles of Na2SO4 in 644 g of Na2SO4.10H2O crystals (A: 2)
12. Calculate nitrogen content in 100 kg of urea sample containing 96.43% urea (A: 45 kg)
13. How many kg of C2H6 contain 4 katom of carbon (A: 60)
14. How many grams of carbon are present in 264 g of CO2 (A: 72)