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Scurrilous con artists have been known to represent gold
Chapter 11, Problem 50(choose chapter or problem)
Problem 50PE
Scurrilous con artists have been known to represent gold plated tungsten ingots as pure gold and sell them to the greedy at prices much below gold value but deservedly far above the cost of tungsten. With what accuracy must you be able to measure the mass of such an ingot in and out of water to tell that it is almost pure tungsten rather than pure gold?
Questions & Answers
QUESTION:
Problem 50PE
Scurrilous con artists have been known to represent gold plated tungsten ingots as pure gold and sell them to the greedy at prices much below gold value but deservedly far above the cost of tungsten. With what accuracy must you be able to measure the mass of such an ingot in and out of water to tell that it is almost pure tungsten rather than pure gold?
ANSWER:
Solution
Step 1 of step 4
We have to find if the ingot is gold or tungsten, To calculate the percent difference between the two substances both in water and out of the water. The difference between these percentage is a difference in accuracy, so we must have in order to determine the substance we have. The percentage difference is calculated by calculating the difference in a quantity and dividing that by the value of gold.