Concept explainers
(a)
Interpretation: The following operation needs to be evaluated:
Concept Introduction:The BODMAS rule must be used to solve the expressions with brackets. If any expression contains brackets like ((), {}, []), to simplify them, a sequence must be followed as given below:
Bracket → Operation→ Division → Multiplication → Addition →Subtraction
(b)
Interpretation: The following operation needs to be evaluated:
Concept Introduction: The BODMAS rule must be used to solve the expressions with brackets. If any expression contains brackets like ((), {}, []), to simplify them, a sequence must be followed as given below:
Bracket → Operation→ Division → Multiplication → Addition →Subtraction
(c)
Interpretation: The following operation needs to be evaluated:
Concept Introduction: The BODMAS rule must be used to solve the expressions with brackets. If any expression contains brackets like ((), {}, []), to simplify them, a sequence must be followed as given below:
Bracket → Operation→ Division → Multiplication → Addition →Subtraction
(d)
Interpretation: The following operation needs to be evaluated:
Concept Introduction: The BODMAS rule must be used to solve the expressions with brackets. If any expression contains brackets like ((), {}, []), to simplify them, a sequence must be followed as given below:
Bracket → Operation→ Division → Multiplication → Addition →Subtraction
(e)
Interpretation: The following operation needs to be evaluated:
Concept Introduction: The BODMAS rule must be used to solve the expressions with brackets. If any expression contains brackets like ((), {}, []), to simplify them, a sequence must be followed as given below:
Bracket → Operation→ Division → Multiplication → Addition →Subtraction
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Check out a sample textbook solutionChapter 1 Solutions
Basic Chemistry
- Do the following calculations and use the correct number of significant figures in your answers. Assume all numbers are the results of measurements. In calculations involving both addition/subtraction and multiplication/division, it is usually better to do additions/subtractions first. a. (0.0267+0.0019)(4.626)28.7794 b. 212.621.8886.37 c. 27.9918.074.630.88 d. 18.872.4618.070.88 HINT: Do divisions first, then subtract. e. (8.462.09)(0.51+0.22)(3.74+0.07)(0.16+0.2) f. 12.0611.840.271arrow_forward5. (44.8±.7)x (98.66 ±.05)%3=arrow_forwardSignificant Figures of log measurements. Perform the following calculations and report each answer with the correct number of significant figures Log 4.38 pH = – Log 6.243 x 10-5; pH = ______. Antilog -1.48 Antilog 32.23 Perform the following calculations and report each answer with the correct number of significant figures (321.54 x 79.2)+0.0056 log 8.005 x 10-4 + log 6.0455 x 10-7 (5.6x103 x 2.42x105)/(0.359+0.699)arrow_forward
- identify the number of significant figures 3.46728 + 14.91 + 0.98001 + 5.231 23.1 + 4.77 + 15.39 + 3.581 24.101 - 0.9807 0.04216 - 0.004134 654,321 - 564,321arrow_forwardThank you I got the correct answer however I am unable to get the same answer on my calculator. I keep getting 3.1645425X10^-54. I don't know what I am plugging in incorrectly. This is what I plug in (6.626X10^-34)/(1.67X10^-27)(9.11X10^6)arrow_forwardQuestion 1 Give the correct number of significant figures for 2500, 2500. ,0.0043, 0.06050 Question 2 Give the answer to the correct number of significant figures: 7964 + 86.94 + 760 =? Question 3 Give the answer to the correct number of significant figures: 4.596 - 2.81 =? Question 4 Give the answer to the correct number of significant figures: (4.58 x 10) x (4.3198 x 10-19) =? Question 5 Give the answer in scientific notation and to the correct number of significant figures: (7860) / (0.00001)=?arrow_forward
- Make the following calculation and report your answer to the correct number of significant figures running to the result, if necessary.  (4.566+ 6.2192)/ 88.92arrow_forward» Significant Figure Rules 01 >> 02 >> 03 >> 04 >> 05 >> All nonzero digits are significant. Zeros that appear between other nonzero digits are always significant. Zeros that appear in front of all of the nonzero digits are called left-end zeros. Left-end zeros are never significant. Zeros that appear after all nonzero digits are called right-end zeros. Right-end zeros in a number that locks a decimal point are not significant. ▬▬▬ 美銀銀時 ☐☐ Right-end zeros in a number with a decimal point are significant. This is true whether the zeros occur before or ofter the decimal point. 237 has three significant figures. 1.897 has four significant figures. 39,004 has five significant figures. 5.02 has three significant figures. 0.008 has one significant figure. 0.000416 has three significant figures. 140 has two significant figures. 75,210 has four significant figures. 620.0 has four significant figures. 19.000 has five significant figures. For multiplication and division problems, the answer…arrow_forwardA class of chemistry students measured the density of an unknown liquid. If the correct density of the sample is 1.14 g/mL, what is the percent error for their average experimental density? Group Density (g/mL) 1 1.033 1.185 1.075 4 1.026 1.135 1.022 %E = 94.6% %3D %E = 5.4% %3D %E = 6.1% %E = 5.7%arrow_forward
- 26. What is the number of significant figures does the sum of the following contain 3.+5.652, the answer is 0.3+5.652 , the answer isarrow_forwardRound each answer to the correct number of significant figures. 9 +2.8 - 0.135+10.8=22.265 My previous answer was 22.3 it was incorrected.arrow_forwardPerform the following calculations to the correct number significant figures. (23.4813 x 2.52) + 374.99arrow_forward
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