CHEM20ASG1-1 - NAME CHEMISTRY 20 ASSIGNMENT 1-1 TOPIC(S...

Info icon This preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
NAME ________________________ 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 2. 1500 millimeters to km 3. 2390 g to kg 4. 0.52 km to meters 5. 65 kg to g 6. 2.77 kg to mg 7. 1.08 kg to μ g 8. 9.57 x 10¯ 8 mm to nanometers 9. 2.00 L to mL 10. 35.28 mL to L 1
Image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
2. Determine the number of significant digits in each of the following numbers. (10 marks) 1) 1234 _____ 2) 0.023 _____ 3) 890 _____ 4) 91010 _____ 5) 9010.0 _____ 6) 1090.0010 _____ 7) 0.00120 _____ 8) 3.4 x 10 4 _____ 9) 9.0 x 10 -3 _____ 10) 9.010 x 10 -2 _____ 11) 0.00030 _____ 12) 1020010 _____ 13) 780. _____ 14) 1000 _____ 15) 918.010 _____ 16) 0.0001 _____ 17) 0.00390 _____ 18) 8120 _____ 19) 7.991 x 10 -10 _____ 20) 72 _____ 3. Add the following and give the final answer with the correct number of significant digits. (5 marks) a) 9.54 + 6.578 = b) 8.55 + 11.6 + 10 = c) 135 + 6.78 = d) 51.08 + 9.9 = e) 100 + 34.9 = 4. Multiply the following and give the final answer with the correct number of significant digits. (10 marks) a) 18.4 X 10.98 = b) (1.23 X 10 3 ) (2.301 X 10 4 ) = c) 16.56 X 6.0 = d) 5.5 X 2 = 2
Image of page 2
e) 24.3 X 7.87 = f) 1000 X 234 = g) 358.76 X 4.32 = h) (1.245 X10 4 ) (7.98 X10 3 ) = i) 7 X 23 = j) 0.098 X 0.7621 = 5. Convert the following numbers into scientific notation (all with three significant
Image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 4
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern