solid (grams) 28.1 26.1 26.2 Length of solid (centimeters) 5.25 5 4.5 Width of solid (centimeters) 3 4 3.5 Height of solid (centimeters) 2.5 3 2 Calculations Show all of your work for each of the following calculations and be careful to follow significant figure rules in each calculation. Part I: Density of Unknown Liquid 1. Calculate the mass of the liquid for each trial. (Subtract the mass of the empty graduated cylinder from the mass of the graduated cylinder with liquid.) Trial 1- 10.5
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01.07 Accuracy and Precision: Balance Lab Worksheet Calculations Show all of your work for each of the following calculations and be careful to follow significant figure rules in each calculation. 1. Part I: Density of Unknown Liquid 1. Calculate the mass of the liquid for each trial. (Subtract the mass of the empty graduated cylinder from the mass of the graduated cylinder with liquid.) Trial 1 36 - 25.5 = 10.5 Trial 2 36.5 - 25.5 = 11 Trial 3 36.9 - 25.5 = 11.4 2. Calculate the
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multiplied by a power of 10 and must be between 1 and 10. Significant figures: The number of digits you quote when you write down the value of a quantity that has been measured with a degree of uncertainty. The smaller the number of significant figures quoted for a value‚ the smaller the uncertainty in that value. The significant figure is the number(s) that carry meaning to that particular range of digits. So in the figure 247300‚ the most significant number is 2 as it tells us the number is 2 thousand
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How many significant figures should we take for the answer? The relative uncertainty of each numbers = 45.0118 x = 4.50 ‚ 45.0118 (2 sig. figures) ‚ Addition and subtraction 5.74 + 0.823 + 2.651 = 9.214 How many significant figures should we take for the answer? 5.74 + 0.823 + 2.651 9.214 9.21 (2 decimal places) Logarithms and antilogarithms • In a logarithm of a number‚ keep as many digits to the right of the decimal point as there are significant figures
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giving your answer in degrees correct to 1 decimal place. (2 marks) 3. A 2m 4m Fig. 1 2m B Figure 1 shows a uniform plank AB of length 8 m and mass 30 kg. It is supported in a horizontal position by two pivots‚ one situated at A and the other 2 m from B. A man whose mass is 80 kg is standing on the plank 2 m from A when his dog steps onto the plank at B. Given that the plank remains in equilibrium and that the magnitude of the forces exerted by each of the pivots on the plank are equal
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2nd Edition Introductory Biology Student Manual Copyright Information Information Copyright Introductory Biology Lab Manual © 2013 eScience Labs‚ LLC. All rights reserved. This material may not be reproduced‚ displayed‚ modified‚ or distributed‚ in whole or in part‚ without the express prior written permission of eScience Labs. Appropriate citation(s) must accompany all excerpts and/or quotations. For written permissions‚ please contact info@eScienceLabs.com Note‚ educational institutions and
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The Lab Report‚ Significant Figures & Working with Numbers CHMY 142-18 Experiment 1 September 4th‚ 2009 Introduction: This experiment is dealing with the relative accuracy of an individual measurement. Data will be provided to perform the calculations asked for. The purpose of this experiment is to know how to use significant figures and to get formularized with making proper laboratory reports. Procedure: Use the data table’s information to solve the missing
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(centimeters) | 5.25 | 5.00 | 4.50 | Width of solid (centimeters) | 3.00 | 4.00 | 3.50 | Height of solid (centimeters) | 2.50 | 3.00 | 2.00 | Calculations Show all of your work for each of the following calculations and be careful to follow significant figure rules in each calculation. Part I: Density of Unknown Liquid 1. Calculate the mass of the liquid for each trial. (Subtract the mass of the empty graduated cylinder from the mass of the graduated cylinder with liquid.)
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Vibration- Rotation Spectroscopy of HCl and DCl Purpose: To determine the fundamental vibration frequency and bond length for H35Cl‚ H37Cl‚ D35Cl‚ and D37Cl and to compare the isotope effects to theoretically predicted values. Introduction Vibration spectroscopy is one of the most important tools for the accurate determination of molecular structure. Vibration spectroscopy also plays an important role in environmental chemistry. For example‚ the albedo of the earth’s atmosphere is controlled by the
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costs 6.90 $. Whats the cost per bag when you include shipping? The total purchase is 6 bags plus shipping‚ 6(8.95 $) + 6.90 $ = 60.60 $ Dividing by the number of bags gives 10.10 $ per bag. 7. Express the following with appropriate units and significant figures: (a) 1.0 m plus 1 mm‚ (b) 1.0 m times 1 mm‚ (c) 1.0 m minus 999 mm‚ (d) 1.0 m divided by 999 mm. a) To the least-precise decimal place‚ we have 1.0 m + 1 × 10−3 m = 1.0 m b) The least-precise factor‚ 1 m‚ has one
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