If a student accurately made a measurement of 3.1, which of the following rulers must they have used (ignore units)? O O O O 5 O 3 O infinite 02 3 04 3 3 3 4 4 A student measure the length of a block to be 25.67 cm. If the correct value is 26.02 cm, how many sig figs are in the correct measurement of their percent error? 3.1 3.01 5 6

If a student accurately made a measurement of 3.1, which of the following rulers must they have used (ignore units)? O O O O 5 O 3 O infinite 02 3 04 3 3 3 4 4 A student measure the length of a block to be 25.67 cm. If the correct value is 26.02 cm, how many sig figs are in the correct measurement of their percent error? 3.1 3.01 5 6

Introductory Chemistry: A Foundation

9th Edition

ISBN:9781337399425

Author:Steven S. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Donald J. DeCoste

Chapter2: Measurements And Calculations

Section: Chapter Questions

Problem 134AP: You are working on a project where you need the volume of a box. You take the length, height, and...

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You are working on a project where you need the volume of a box. You take the length, height, and width measurements and then multiply the values together to find the volume. You report the volume of the box as 0.310m3 . If Iwo of your measurements were 0.7 120 m and 0.52458 m, what was the other measurement?
2. A student is told to determine the density of a solid unknown cylinder. The mass of the unknown cylinder is 56.38 grams. The unknown cylinder is 4.95 cm high and has a radius of 1.28 cm. The student measures the correct mass but measures the height as 4.96 cm and the radius as 1.30 cm. What will be the percent error in the student's density value? True- Experimental| x100 Percent Error = True
What is the percentage uncertainty with the following measurement 0.100 ± 0.005 g? Provide your answer to one decimal point.
A student measures the length of an object and obtains 3.65 cm. If thr true value (as reported by the instructor) is 3.75 cm, calculate the percent error.
graduated cylinder weighs 35.825 g. When 10 mL of water is measured in it, the weight of the graduate and water is 45.835 g. Calculate the weight of the water, and express any deviation from 10g as percentage of error.
The pharmacist attempts to weigh 0.375 g o morphine sulfate on a balance of dubious accuracy. When checked on a highly accurate balance, the weight is found to be 0.400 g. Calculate the percentage of error in the first weighing.
a) A student measured the mass of a solid using a weighing balance and found the mass of the solid as 25.12 gm. If the actual mass of the solid is 0.02502 kg, calculate the percentage error in the measurement of the students.
1. A piece of metal was weighed on a laboratory balance five times and gave the following values: 15.75, 15.73, 15.77, 15.76and 15.74 grams.Determine the average mass andstandard deviation from the mean mass.(b) An object weighs 0.0930 gramson an analyticalbalance. Indicate theaccuracy of the balance and the number of significant figures in this weight.
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Which choice best describes the degree of uncertainty in the measurement 16.30 g? O The uncertainty cannot be determined without additional information. The quantity is exact. +1.00 g +0.01 g ±0.10 g
A student performs an experiment to determine the molar mass of magnesium oxide. The student repeats the experiment five times and collects the following data: 40.220gmol, 40.654gmol, 40.314gmol, 40.165gmol, and 40.554gmol. If the accepted value for the molar mass is 40.304gmol, what is the percent relative error for the average of this data? Give the answer with three significant figures.
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