Chemical conversions with key

CHEMISTRY 11 SI system practice worksheet: For each question, maintain the same number of Significant Figures in your answer. 1. a) b) c) Convert each of the following measurements to metres: 431.5 Em 9.875 fm 14.587 mm 2. a) b) c) Convert each of the following measurements to litres: 182 mL 0.895 ML 10 µL 3. a) b) c) Convert each of the following measurements to milliliters: 0.250 L 9.23 x 10-6 dL 25 ZL 4. a) b) c) Convert each of the following measurements to kilometers: 23.896 cm 0.023 Tm 437 nm 5. a) b) c) Convert each of the following measurements to milligrams: 13.52 g 41.05 Tg 12 kg 6. a) b) c) Convert each of the following measurements to kg: 2450 g 283 zg 6.0 x 10-2 cg 7. How many cm is 4.6 ym? 8. How much is 72 ng in Gg? 9. How far is 450 km in pm? 10. What is the volume of 356 pL in PL? 11. How many s in 2.93 fs? 12. If you have 1.87 hg, how many yg do you have? 13. If you poured out 25 EL, how many µL did you pour out? 14. If a reaction took 48 ns, how many Ts did it take? 15. How much is 5.972 x 1024 kg (the mass of the earth) in Yg? 16. How many yg is 1.675 x 10-27 kg (mass of a neutron) CHEMISTRY 11 SI system practice worksheet: ANSWER KEY For each question, maintain the same number of Significant Figures in your answer. 1. a) b) c) Convert each of the following measurements to metres: 431.5 Em 4.315 x 1020 m 9.875 fm 9.875 x 10-15 m 14.587 mm 1.4587 x 10-2 m 2. a) b) c) Convert each of the following measurements to litres: 182 mL 1.82 x 10-1 L (0.182 L) 0.895 ML 8.95 x 105 L 10 µL 1 x 10-5 L (1 sig fig) 3. a) b) c) Convert each of the following measurements to milliliters: 0.250 L 250. mL or 2.50 x 102 mL (3 sig figs) -6 9.23 x 10 dL 9.23 x 10-4 mL 25 ZL 2.5 x 1025 mL 4. a) b) c) Convert each of the following measurements to kilometers: 23.896 cm 2.3896 x 10-4 km 0.023 Tm 2.3 x 107 km 437 nm 4.37 x 10-10 km 5. a) b) c) Convert each of the following measurements to milligrams: 13.52 g 1.352 x 104 mg 41.05 Tg 4.105 x 1016 mg 12 kg 1.2 x 107 mg 6. a) b) c) Convert each of the following measurements to kg: 2450 g 2.45 kg (3 sig figs) 283 zg 2.83 x 10-22 kg -2 6.0 x 10 cg 6.0 x 10-7 kg 7. How many cm is 4.6 ym? 4.6 x 10-22 cm 8. How much is 72 ng in Gg? 7.2 x 10-17 Gg 9. How far is 450 km in pm? 4.5 x 1017 pm 10. What is the volume of 356 pL in PL? 3.56 x 10-25 PL 11. How many s in 2.93 fs? 2.93 x 10-15 s 12. If you have 1.87 hg, how many yg do you have? 13. If you poured out 25 EL, how many µL did you pour out? 14. If a reaction took 48 ns, how many Ts did it take? 15. How much is 5.972 x 1024 kg (the mass of the earth) in Yg? 16. How many yg is 1.675 x 10-27 kg (mass of a neutron) 1.87 x 1026 yg 2.5 x 1025 µL 4.8 x 10-20 Ts 5.972 x 103 Yg 1.675 yg