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Concept explainers
(a)
Interpretation : The following operation should be performed and the solution should be reported in correct significant figures.
Concept Introduction : A number can be changed to given significant figure either by round off or by addition of zero. The rules for significant figures are:
- Non-zero digits are always significant.
- Any zeros between two significant digits are always significant.
- A final zero in the decimal portion is also significant.
(b)
Interpretation : The following operation should be performed and the solution should be reported in correct significant figures.
Concept Introduction : A number can be changed to given significant figure either by round off or by addition of zero. The rules for significant figures are:
- Non-zero digits are always significant.
- Any zeros between two significant digits are always significant.
- A final zero in the decimal portion is also significant.
(c)
Interpretation : The following operation should be performed and the solution should be reported in correct significant figures.
Concept Introduction : A number can be changed to given significant figure either by round off or by addition of zero. The rules for significant figures are:
- Non-zero digits are always significant.
- Any zeros between two significant digits are always significant.
- A final zero in the decimal portion is also significant.
(d)
Interpretation : The following operation should be performed and the solution should be reported in correct significant figures.
Concept Introduction : A number can be changed to given significant figure either by round off or by addition of zero. The rules for significant figures are:
- Non-zero digits are always significant.
- Any zeros between two significant digits are always significant.
- A final zero in the decimal portion is also significant.
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Chapter 2 Solutions
EBK BASIC CHEMISTRY
- Conversion Factors in Calculations Report Sheet - Lab 2 B. Signlficant Figures in Calculations B.1 Perform the following multiplication and division calculations. Give a final answer with the correct number of significant figures: 4.5 x 0.28 0.1184 x 8.00 x 0.0345 (42.4)(15.6) 1.265 (35.56)(1.45) (4.8)(0.56) B.2 Perform the following addition and subtraction calculations. Give a final answer with the correct number of significant figures. Pre settin 2-Line entry of up Entry Line). 11 digits scrolf line. Press 2nd immediately to the The second line (Res digits, plus a decimal po indicator, and a 2-digit pos Results that exceed the digr Notation. Indicator Definition 2nd function. 2nd UVD Hunohaliarrow_forward(5.985 mmmm )(7.3 mmmm ) Complete the operation and express the answer with the appropriate number of significant figures and units. 26.0 gg / 2.3 mLmL Complete the operation and express the answer with the appropriate number of significant figures and units. 18.89 gg + 0.0215 gg Complete the operation and express the answer with the appropriate number of significant figures and units. 36.82 gg + 17 mgmg Complete the operation and express the answer with the appropriate number of significant figures and units.arrow_forward(4.123 × 0.12) + 24.2 why is the answer 25 and not 24.7? The last rule to be used is the addition, which meant I would round to 1 decimal place in this case. Yet the final answer is rounded to two significant figures (multiplication rule), why is this?arrow_forward
- 6. Perform the following calculations and report each answer with the correct number of significant figures. (53.9 +11.21) x 10.3arrow_forwardWhat answer should be reported, with the correct number of significant figures, for the following calculation? (249.362 + 41) / 63.498 The answers 4.6 and 4.5728 are both marked as wrong.arrow_forwardMeasurement in Chemistry: Perform the following computation, expressing your answers to the proper number of significant figures. 16,34023.4216,34023.42 6.000 X 4.000 3.07 X (17.6 - 13.73)arrow_forward
- Emergency Medicine Research : UCSF Fresno https://www.fresno.ucsf.edu/emresearch/ log(10.23) = 1.01 1.010 1.0 1.0099 1.00988 Question 11 Calculate the following to the correct number of significant figures: Antilog(7.28) = 1.90 x 107 1. x 107 1.9 x 107 0.2 x 106 rect number of significant figures: 0.23 x 106arrow_forward(Q4) A diamond has a mass of 6.655 (troy) ounces. What is its mass in grams? (4 sf)arrow_forward( 5.31 × 10 8 ) + ( 6.53 × 10 7 )arrow_forward
- 1. 9.3+12.20 + 6.571 = 2. (5.3 + 6.678) / 25.0 =arrow_forwardPerform each of the following calculations, and give an answer with the correct number of significant figures. (7 × 10-5) (6.30 × 104) (7.76 × 10-8) Express your answer using the correct number of significant figures. ΨΕ ΑΣΦ 6.10 Submit 8 Part F ? Previous Answers Request Answer X Incorrect; Try Again; 5 attempts remaining (6.15 × 10²) (1.98 × 10-³) (2.516 × 10-³)(68.0) Express your answer using the correct number of significant figures. ΨΠ ΑΣΦ ?arrow_forwardThe following data table indicates the number of hours spent on school work last week. If 4 hours was spent on mathematics, how many hours were spent on all homework assignments? School Work Hours (%) Science 43.75 Mathematics 25.00 History 12.50 Reading 12.50 Art 6.25arrow_forward
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