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The chapter sections to review are shown in parentheses at the end of each problem.
In which of the following pairs do both numbers contain the same number of significant figures? (2.2)
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Basic Chemistry
- (1.7) A student performs an experiment to determine the density of a sugar solution. She obtains the following results: 1.71 g/mL, 1.72 g/mL, 1.71 g/mL, 1.70 g/mL. If the actual value for the density of the sugar solution is 1.50 g/mL, which statement below best describes her results? O Her results are accurate, but not precise. O Her results are precise, but not accurate. O Her results are both precise and accurate O Her results are neither precise nor accurate.arrow_forwardThe answers 0.10 and 0.099 are both incorrect so please don't give me the same answer. Calculate what the answer is with the correct significant figures at the end? How is that and incomplete question? Perform the calculation and record the answer with the correct number of significant figures. (6.5 - 6.03) 4.73 0.099 Incorrectarrow_forward(1.8)The area of a paper is 758 cm². What is the area of the paper in m²? O 7.58 x 104 m² O 7.58 x 102 m² O 0.0379 m² O 7.58 m²arrow_forward
- The correct answer (reported to the proper number of significant figures) to the following is (12.67 + 19.2)(3.99) / (1.36 + 11.366) = O 10.0 O 9.9985 O 19.9985 O 1.00 x 10² O none of the abovearrow_forward(1.9) Examine the graph of mass vs. volume of a substance below and answer the following question. How much does the volume (cm³) of the substance would increase when the mass increases from 16.0 g to 35.0 g? 40 15 Mass (g) 35 30 25 20 15 10 5 0 5 Volume (cm^3) 10arrow_forwardWhat answer should be reported with the correct number of significant figures, for the following calculation? (12.87 + 3.7)/5.247arrow_forward
- 2.92 A graduated cylinder contains three liquids A, B, and C, which have different densities and do not mix: mercury (D = 13.6 g/mL), vegetable oil (D 0.92 g/mL), and water (D == 1.00 g/mL). Identify the liquids A, B, and C in the cylinder. (2.7) 50 40 30 -B 20 10 2.93 The gray cube has a density of 4.5 g/em2. Is the density of the green cube the same, lower than, or higher than that of the grayarrow_forwardThis is a practice exercise. i will write down the answer that it says on the book for each problems. i need help on how they got that answer. how many significant figures should the answer in each of these calculations contain? just the significant figures only (A) (14.0) (5.2) Answer: 2. (E) 119.1-3.44. answer: 4 (B) (0.1682) (8.2). Answer: 2 (h) 1.6 + 23 - 0.005. Answer: 2 (C) (160)(33)/4. Answer: 1 (D) 8.2+0.125 Answer: 2arrow_forwardQuestion 10 Carry out the following calculation and give the final answer with the correct number of significant figures: Question 11 45.678 34.89 +2.333 Carry out the following calculation and give the final answer with the correct number of significant figures: Question 12 9.324(5.43/0.54) LO Carry out the following calculation and give the final answer with the correct number of significant figures: (2.345)[(6.43 +3.76)/(11.78 1.05)] - 2.3arrow_forward
- Perform the calculation and record the answer with the correct number of significant figures. (6.5-6.08) %3D 3.95arrow_forwardPerform the calculation to the correct number of significant figures. (8.111-7.50)/3.002 0.1700 0.1698867 0.170 0.20arrow_forwardHow many significant figures would this calculation have if it were completed: (9.04 - 8.23 +21.954 + 81.0) x 3.1416 A) 3 B) 4 C) 5 D) 6arrow_forward
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