CHEM20ASG1-1KEY - NAME_KEY CHEMISTRY 20 ASSIGNMENT 1-1...

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NAME ___________ KEY _____________ CHEMISTRY 20 ASSIGNMENT 1-1 TOPIC(S) COVERED: Basic Skills TOTAL MARKS: 59 DIRECTIONS: Answer all questions on this paper. Please show all your work for mathematical calculations unless specifically otherwise. Complete sentences are not required. 1. Convert the following. (10 marks) 1. 0.75 kg to milligrams 7.5 x 10 5 mg 2. 1500 millimeters to km 1.5 x 10¯ 3 km 3. 2390 g to kg 2.39 kg 4. 0.52 km to meters 520 m 5. 65 kg to g 6.5 x 10 4 g 6. 2.77 kg to mg 2.77 x 10 6 mg 7. 1.08 kg to μ g 1.08 x 10 9 μ g 8. 9.57 x 10¯ 8 mm to nanometers 9.57 x 10¯ 2 nm 9. 2.00 L to mL 2.00 x 10 3 mL 10. 35.28 mL to L 0.03528 L 2. Determine the number of significant digits in each of the following numbers. (10 marks) 1
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1) 1234 ___4__ 2) 0.023 ___2__ 3) 890 ___3__ 4) 91010 __5___ 5) 9010.0 __5___ 6) 1090.0010 ___8__ 7) 0.00120 ___3__ 8) 3.4 x 10 4 __2___ 9) 9.0 x 10 -3 __2___ 10) 9.010 x 10 -2 __4___ 11) 0.00030 ___2__ 12) 1020010 __7___ 13) 780. __3___ 14) 1000 __4___ 15) 918.010 _6____ 16) 0.0001 __1___ 17) 0.00390 __3___ 18) 8120 __4___ 19) 7.991 x 10 -10 __4___ 20) 72 __2___ 3. Add the following and give the final answer with the correct number of significant digits. (5 marks)
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CHEM20ASG1-1KEY - NAME_KEY CHEMISTRY 20 ASSIGNMENT 1-1...

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