A Water Sample Collected Downstream from a Gold-Mining Operation Returns

question 10

Essay

A water sample collected downstream from a gold-mining operation returns a cyanide concentration of 6.18 g/L CN⁻.A 10-mL aliquot is spiked with 100 L of 500.0 g/L sodium cyanide and analyzed.Analysis returns a cyanide concentration of 10.5 g/L CN⁻.What is the percent recovery for the spike?

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Definitions:

Cash Over

A situation where the physical cash on hand exceeds the expected amount based on accounting records.

Cash Short

A situation that occurs when the actual cash received is less than the amount expected or recorded, often reflecting errors or theft.

Cash Over

A situation where the amount of cash on hand is more than the expected amount, indicating a discrepancy in transactions.

Auxiliary Petty Cash Record

A detailed documentation or log used to track petty cash expenses and replenishments separate from the main cash records.