Questions from General Chemistry

Q: The color change of a chemical indicator requires an overtitration of 0

The color change of a chemical indicator requires an overtitration of 0.03 mL. Calculate the percent relative error if the total volume of titrant is a 50.00 mL. b 10.0 mL. c 25.0 mL. d 30.0 mL

Q: A loss of 0.4 mg of Zn occurs in

A loss of 0.4 mg of Zn occurs in the course of an analysis for that element. Calculate the percent relative error due to this loss if the mass of Zn in the sample is a 30 mg. b 100 mg. c 300 mg....

Q: Simplify the following quantities using a unit with an appropriate prefix:

Simplify the following quantities using a unit with an appropriate prefix: a. 5.8 × 108 Hz. b. 4.37 × 1027 g. c. 9.31 × 107 mmol. d. 8.3 ×1010 s. e. 3.96 × 106 nm. f. 53,000 g.

Q: Find the mean and median of each of the following sets of

Find the mean and median of each of the following sets of data. Determine the deviation from the mean for each data point within the sets, and find the mean deviation for each set. Use a spreadsheet i...

Q: Explain the difference between a. random and systematic error.

Explain the difference between a. random and systematic error. b. constant and proportional error. c. absolute and relative error. d. mean and median.

Q: Calculate the molar concentration of a solution that is 50.0

Calculate the molar concentration of a solution that is 50.0% NaOH (w/w) and has a specific gravity of 1.52.

Q: Suggest two sources of systematic error and two sources of random error

Suggest two sources of systematic error and two sources of random error in measuring the length of a 3-m table with a 1-m metal rule.

Q: Name three types of systematic errors.

Name three types of systematic errors.

Q: Estimate the absolute deviation and the coefficient of variation for the results

Estimate the absolute deviation and the coefficient of variation for the results of the following calculations. Round each result so that it contains only significant digits. The numbers in parenthese...

Q: What is the object of the sampling step in an analysis?

What is the object of the sampling step in an analysis?