3. A method of analysis yields masses of gold that are low by 0.4 mg. Calculate the percent relative error caused by this result if the mass of gold in the sample is a. 500 mgb. 250 mg c. 60 mg
3. A method of analysis yields masses of gold that are low by 0.4 mg. Calculate the percent relative error caused by this result if the mass of gold in the sample is a. 500 mgb. 250 mg c. 60 mg
Chemistry: The Molecular Science
5th Edition
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:John W. Moore, Conrad L. Stanitski
Chapter2: Chemical Compounds
Section: Chapter Questions
Problem 143QRT: The present average concentration (mass percent) of magnesium ions in seawater is 0.13%. A chemistry...
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3. A method of analysis yields masses of gold that are low by 0.4 mg. Calculate the percent relative error caused by this result if the mass of gold in the sample is
a. 500 mg
b. 250 mg
c. 60 mg
4. The method described above is to be used for the analysis of ores that assay about 1.2%
gold. What minimum sample mass should be taken if the relative error resulting from a 0.4-mg loss is not to exceed
a. -0.1%
b. -0.8%
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Given:
The mass of gold obtained is 0.4 mg less than the actual mass.
The actual mass is given as 500 mg, 250 mg, and 60 mg.
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