Chemistry, 20.06.2020 22:57 smartie80

In many methods that employ multiple measurements, one particular type of measurement may be the "weak link that limits overall precision. For the density measurements you made here, you will determine what contributes most to the CV of your calculated density - the measurements of mass or of dimensions. Typical standard deviation for length and mass using the equipment employed are the following: Dimensions: 0.01 cm
Mass: 0.0029
Diameter (cm): 1.12
Height (cm): 1.69
Mass (cm): 4.020
Volume (cm3): 1.66
Density (g/cm3): 2.42
Select the data for your lightest object focusing on its mass and its shortest dimension.
A. What is the CV for the mass value?
B. What is the CV for the measurement of its shortest dimension?
C. Which type of measurements (mass or dimensions) had the greatest impact on the CV of the measured density?
1. Mass measurements have the greater impact because the mass CV with lightest object was greater than its dimension CV.
2. Mass measurements have the greater impact because the mass CV with lightest object was lesser than its dimension CV.
3. Dimension measurements have the greater impact because the dimension CV with lightest object was greater than its mass CV.
4. Dimension measurements have the greater impact because the dimension CV with lightest object was lesser than its mass CV.

Answers: 2

Show answers

Another question on Chemistry

Chemistry, 21.06.2019 23:30

Which of the following statements concerning the influence of culture on ethnic identity formation is accurate? a. one will reject ethnic identity if cultural stereotypes are encountered. b. if one’s ethnic city is different from the dominant cultural group, then one’s ethnic identity you will become weekend. c. if an the ethnic group is excepted by dominant culture, then ethnic identity formation can be a difficult process. d. similarity to the dominant culture can determine how easy it is for one to except ethnic differences.

Answers: 2

Answer

Chemistry, 22.06.2019 03:10

Between 2014 and 2016, more than 25,000 children in flint, michigan, drank water that was contaminated with lead from lead pipes. during this time, the city claimed the water was safe to drink. which of these actions could the city have taken to ensure that the drinking water was free from lead?

Answers: 3

Answer

Chemistry, 22.06.2019 13:50

Abeaker with 2.00×102 ml of an acetic acid buffer with a ph of 5.000 is sitting on a benchtop. the total molarity of acid and conjugate base in this buffer is 0.100 m. a student adds 4.70 ml of a 0.360 m hcl solution to the beaker. how much will the ph change? the pka of acetic acid is 4.740.

Answers: 1

Answer

Chemistry, 22.06.2019 19:10

Which statement correctly describes the phosphate ion, ? it is composed of one phosphorus atom and four oxygen atoms covalently bonded together, and there is a –3 charge distributed over the entire ion. it is composed of one phosphorus atom and four oxygen atoms covalently bonded together, and there is a –3 charge on the phosphorus atom. it is composed of one phosphorus atom and four oxygen atoms ionically bonded together, and there is a –3 charge distributed over the entire ion. it is composed of one phosphorus atom and four oxygen atoms ionically bonded together, and there is a –3 charge on the phosphorus atom.

Answers: 3

Answer

You know the right answer?

In many methods that employ multiple measurements, one particular type of measurement may be the "we...

Questions