Significant figures practice problems level 3
Chemistry 1411 Practice Exam 1, Chapters 1-4 Chang
Chemistry 1411 Practice Exam 1, Chapters 1-4 Chang Show your calculations clearly on show work problems. A periodic table is also attached to the end of the exam. Good luck! 1. Give the number of significant figures in the following numbers (2 pts each): a) 5.204 X 102 mL _____ b) 0.0010270 mole _____ 2. Carry out the following operations and ...
[PDF File]Skills Worksheet Problem Solving
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Is the number of significant figures correct? Yes; the number of significant figures is correct because there are three signifi-cant figures in the given value of 0.366 mol Zn. Is the answer reasonable? Yes; 0.366 mol is about 1/3 mol. 23.9 g is about 1/3 the molar mass of Zn. 65.39 g Zn 1 mol Zn 0.366 mol Zn 23.9 g Zn multiply by the molar ...
[PDF File]Measurements, Significant Figures, and Unit …
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PROCEDURES FOR PART 3: Use the rules to determine the number of significant figures in each of the following mathematical calculations. Record the calculator answer, then give your rounded answer. This section allows you to practice applying the two different rules you will be using all semester when performing calculations on measured numbers.
CHEM 1411 – General Chemistry I Practice Problems ...
Practice Problems, Chapters 1–3 Chapter 1 – Chemistry: The Study of Change ... How many significant figures are in the following numbers? a) 3.1416 b) 6.022 X 1023 atoms/mole c) 0.000104 g d) 6.0 g/mL e) 1.00794 amu f) 5000 mi. 5. Perform the following operations and give the correct number of significant figures in your answers. a) (0.031 ...
[PDF File]Pearson Edexcel Level 3 Advanced Subsidiary GCE in ...
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give your answer to either 2 significant figures or 3 significant figures. Figure 1 A car moves along a straight horizontal road. At time t = 0, the velocity of the car is U –m s 1. The car then accelerates with constant acceleration a m s–2 for T seconds. The car travels a distance D metres during these T …
[PDF File]Rules for Significant Figures (sig figs, s.f.)
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(23 + 7) ÷ 10.0 = 3 (this is what your calculator spits out) In this case, your answer should have 2 significant figures, 3.0. E. Special Rules for THIS CLASS! For this class only we will consider all numbers less than 1000 as significant. That means 900 has 3 significant digits and 1000 has 1 significant digit.
[PDF File]Practice Worksheet for Significant Figures
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Period:_____ Practice Worksheet for Significant Figures Name:_____ Identify the sums or differences of the following to the correct number of significant figures: 41) 8.41 X 1014 + 9.71 X 1012 = 8.51 E 14 42) 5.11 X 1023 - 4.2 X 1021 = 5.1 E 23 43) 8.2 X 1030 + 4.560 X 1023 = 8.2 E 30 44) 6.023 X 10-23 - 2.1 X 10-20 = -2.9 E -20 Express the product and the quotients of the following to the ...
[PDF File]CHM 130 Sig Fig Practice Problems
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CHM 130 Sig Fig Practice Problems Significant digits or figures are not something we make up to terrorize you all semester long. They represent the accuracy of a measurement. For example, a cheap bathroom scale bought at the dollar store reads your weight as 152 pounds, not 152.45809 pounds. It is not that accurate.
[DOC File]Practice Worksheet for Significant Figures
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1.31 cm x 2.3 cm = 5.7621 m x 6.201 m Part 4: Density Problems. Perform necessary calculations by calculating mass, volume or density. Next, round your answer to the correct # of Significant Figures. Determine the density of a rectangular piece of concrete that measures 3.7 cm by 2.1 cm by 5.8cm and has a mass of 43.8 grams.
[DOC File]Unit 1 Packet - Chandler Unified School District
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Gold has a density of 19.3 g/ cm3. A cube of gold measures 4.23 cm on each edge: 8. What is the volume of the cube? 9. What is its mass? How many significant figures should you include in your answer and why? 10. A standard backpack is approximately 30cm x 30cm x 40cm. Suppose you find a hoard of pure gold while treasure hunting in the wilderness.
[DOC File]Significant Figures Practice Worksheet
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Practice Problems for Significant Figures . RULE -1: If the decimal is . Present: Find the first non zero on the left, then count all digits to the . RIGHT. If the decimal is . Absent: Find the first non zero on the right, then count all digits to the . LEFT. RULE-2: Every digit in scientific notation is Significant.
[DOC File]Sigfig Calculation Practice Problems
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Measurements and Significant Figures Lab. Purpose: The aim of this lab is to practice recording measurements with the correct number of significant figures. Procedure: 1. Several stations have been set up around the room. Step up to a station, read the directions, determine the level of precision for the instrument, and read and record the ...
[DOC File]2 - Notre dame Chemistry
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a. 0.002 849 kg has four significant figures; 2.849 x 10_3. b. 40 030 kg has four significant figures; 4.003 x 104. Practice Problems. 23. Determine the number of significant figures in each. measurement. a. 0.000 010 L c. 2.4050 x 10_4 kg. b. 907.0 km d. 300 100 000 g. Rounding off numbers When you report a calculation, your. answer should ...
[DOCX File]Home | High Point University | High Point, NC
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PRACTICE PROBLEMS. 1.In a clinical study of niacin as a lipid-altering agent, 60% of the 90 patients in the study group developed flushing. ... 5.Perform the following computations, and retain only significant figures in the results: (a)6.39 − 0.008 (b)7.01 − 6.0 (c)5.0 × 48.3 grams ... 8.In a clinical study, the drug methotrexate produced ...
[DOC File]Introduction to Chemistry - Matter and Energy
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n: principal energy level (values 1 – 7) l: sublevel number (range from 0 to n-1) ml: orbital values (range is –l to +l; includes zero) ms: spin value + ½ and – ½ Practice Problems. Measurements and Calculations (Math) 1. How many significant figures are in each of the following? 100 1180.3 0.00198 1.001 67.342 0.0103 4.10 x 104. 2.
[DOC File]Density Practice Problems - Anderson 1
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The water level rises to the 49.10 mL mark, From this information, calculate the density of iron. ... d = 1587 g / 140.4 cm3 = 11.3 g/cm3 . Significant figures in the answer are dictated by the length measurements of three sig figs. 9) vol of iron shot = 49.10 mL - 45.50 mL = 3…
[DOC File]Unit 1 Packet - Chandler Unified School District
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11) Why are significant figures important when taking data in the laboratory? 12) Why are significant figures NOT important when solving problems in your. math class? 13) Using two different instruments, I measured the length of my foot to be 27. centimeters and 27.00 centimeters. Explain the difference between these. two measurements.
[DOC File]Practice Problems for Test I for PHY2020
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Ignore air friction in all problems. 3 sig figs on all answers unless otherwise asked, -1/4 point for not enough sig figs – I have given the units for each answer line. 3 significant figures means than ‘1’ is written as 1.00, and pi, 3.141592, is written as 3.14, and 3/1000, is written as 0.00300 NOT 0.003.
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