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Calculations with Significant Figures
Review: How many significant figures
How can you write seven thousand with1 significant figure 4 significant figures 6 significant figures
Round each to 3 Significant Figures) ) 6.561 ) ) )
Multiplying and DividingMultiply or divide the number out as normal but round the answer to the least number of significant figures in the problem
Solve each with correct Sig Figs2.4 x = 94.20 = (5.682 x 105) x (2.87 x 104) = (2.145 x 10-5) (6.75 x 104) =
Addition and SubtractionAdd or subtract as normal but round the answer with the same number of decimal places as the quantity in the calculation having the least
Solve each with correct Sig Figs5.44 – –
Precision in Measurements
Physics Rules for using Significant Figures. Rules for Averaging Trials Determine the average of the trials using a calculator Determine the uncertainty.
Chemistry Notes Significant Figures & Scientific Notation
Significant Figures. All measurements are inaccurate Precision of measuring device Human error Faulty technique.
POWERPOINT THE SECOND In which you will learn about: Scientific notation +/-/x/÷ with sig figs Rounding.
Rules For Significant Digits
Aim: How can we perform mathematical calculations with significant digits? Do Now: State how many sig. figs. are in each of the following: x 10.
Rule 1: When multiplying and dividing, limit and round to the least number of significant figure in any of the factors. Example 1: 39.0 mm X 385 mm X.
Significant Figures in Mathematical Operations The result of the mathematical operation cannot be expressed to any greater degree of certainty than the.
The Scientific Method 1. Using and Expressing Measurements Scientific notation is written as a number between 1 and 10 multiplied by 10 raised to a power.
How many significant figures?
Significant Figures and Scientific Notation Significant Figures:Digits that are the result of careful measurement. 1.All non-zero digits are considered.
Significant Figures Rules and Applications. Rules for Determining Significant Figures 1.) All Non-Zero digits are Significant. 1.) All Non-Zero digits.
Significant Figures How to count the number of significant figures in a decimal number. How to count the number of significant figures in a decimal number.
Percent Composition. Molar Mass Calculate the Molar Mass of H 2 O 1 mole of H 2 O contains 2 mols H and 1 mol O. The mass of 2 moles H = 2 mol(1.008 g/mol)=
Addition and Subtraction of significant figures. Rule 1 Before performing an addition or subtraction operation, round off numbers to the least amount.
Significant Figures Always record data as accurately as you can (as many sig. figs. as method allows) The last digit of the value that you record should.
Significant Figures Part 2 Problem Solving Applications.
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