111.01Math review for lab 2019.docx - Name CHM111 Lab – Math Review – Grading Rubric Criteria Points possible Part 1 Basic Algebra and Percentages

# 111.01Math review for lab 2019.docx - Name CHM111 Lab –...

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Name_________________________ CHM111 Lab – Math Review – Grading Rubric Criteria Points possible Points earned Part 1. Basic Algebra and Percentages Question 1 (0.25 points each question) 2 Question 2 (0.25 points each question) 1 Question 3 (0.25 points each question) 1 Part II. Number of Sig figs (Question 4) (0.50 points each question) 4 Part III. Rounding and Sig figs in calculations Question 5 (0.50 points each question) 2 Question 6 (0.50 points each question) 2 Question 7 (0.50 points each question) 2 Part IV. Scientific notation (Q8) (0.50 points each question) 3 Part V. Operations with exponents (Q9) (0.50 points each question) 3 Total 20 Subject to other additional penalties as per the instructor Experiment #1. Math Review I. Basic Algebra and Percentages Q1. Solve for the unknown (y) in each of the following cases. Show your work.
25 = 10 – 5y 50 + y = 32 4y + 6 = 15 Q2. Express the following as percentages 1/4 1/15 2/16 1/3 Q3. Solve the following percent problems:
What percent of 40 is 15? What is 60% of 65? 150 is 45% of what number? 1.4 is what percent of 7.7? II. Determining the Number of Significant Figures (S. F.) in a Number All scientific measurements and calculations contain some uncertainty. Scientists have developed rules so that the level of uncertainty can be clearly communicated to other scientists. The last digit of any reported measurement contains uncertainty. In scientific measurements, some zeros are significant and considered part of the measurement while other zeros are non-significant or place-holder zeros and are not considered part of the measurement.

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