Sig figs - Study guides, Class notes & Summaries

ACS Final Exam Questions With 100% Correct Answers 2024

Chemistry 1212 Lab Final Exam Complete Questions and Answers Introductory Lab - CORRECT ANSWER-Purpose: Review of sig figs, slope formula (Y2- Y1/X2-X1); percent error formula ([Accepted-Experimental (/) Accepted] x 100%); rounding, scientific notation, & excel. Procedure: Measured various objects for circumference (C=2πr) and diameter (2r), then produced a graph comparing the two factors. Results: N/A Significant Figure Rules - CORRECT ANSWER-1. All non-zeros are significant. Ex: ...

CHEM-C125 ASSESSMENT TEST QUESTIONS WITH CORRECT ANSWERS A solid sample contains both NaOH and NaCl. 0.500 g of this solid sample was dissolved in water to make a 20.0 mL solution and then this solution was titrated by 0.500 mol/L HCl solution. If 22.5 mL of HCl was used to reach the end point, what is the mass % of NaOH in the original solid sample? NaOH + HCl --> NaCl + H2O - Answer- 90 During titration, it is very common to have some NaOH spilled to the inside wall of Erlenmeyer fl...

Aliquot - Answer- - *Portion of measurement added* - Example: "In this experiment, we will be using an *aliquot* of 10 mL of water for each trial Sig Fig Rules (Significant) - Answer- - Any non-zero digit is a sig fig - Zeros between non-zeros are sig figs - Zeros to the right of the last non-zero digit are sig figs Sig Fig Rules (Insignificant) - Answer- - Zeros to the left of the first non-zero are NOT sig figs Calculations Rules for Sig Figs (+/-) - Answer- - Focus on decim...

Chemistry Cumulative Test 1 Review Exam Questions With Complete Solutions add & subtract with sig figs ️️round to digit they all share multiply and divide sig figs ️️round to lowest number of sig figs 1.672*e-27 ️️.0000000...1672 giga ️️billion mega ️️million kilo ️️thousand centi ️️hundred milli ️️thousand

Aliquot - Answer- - *Portion of measurement added* - Example: "In this experiment, we will be using an *aliquot* of 10 mL of water for each trial Sig Fig Rules (Significant) - Answer- - Any non-zero digit is a sig fig - Zeros between non-zeros are sig figs - Zeros to the right of the last non-zero digit are sig figs Sig Fig Rules (Insignificant) - Answer- - Zeros to the left of the first non-zero are NOT sig figs Calculations Rules for Sig Figs (+/-) - Answer- - Focus on decim...

Chemistry 1212 Lab Final Exam Complete Questions and Answers Introductory Lab - CORRECT ANSWER-Purpose: Review of sig figs, slope formula (Y2- Y1/X2-X1); percent error formula ([Accepted-Experimental (/) Accepted] x 100%); rounding, scientific notation, & excel. Procedure: Measured various objects for circumference (C=2πr) and diameter (2r), then produced a graph comparing the two factors. Results: N/A Significant Figure Rules - CORRECT ANSWER-1. All non-zeros are significant. Ex: ...

Significant Figures Questions and Answers Scored A+ Rules for identifying significant figures 1) All non-zero digits are significant 2) Zeros that occur between significant digits are significant 3) Zeros to the right of the decimal point AND at the end of the number are significant Rules for using significant figures with addition and subtraction 1) Count the number of significant figures to the right of the decimal point for each number in the problem 2) Add or subtract normally ...