Arsenic Is a Poisonous Metal Whose MCL Is 0

question 15

Multiple Choice

Arsenic is a poisonous metal whose MCL is 0.0100 ppm. What is this concentration in molarity?

• A) 1.33  10^-7 M
• B) 1.33  10^-4 M
• C) 7.49  10^-4 M
• D) 7.49  10^-7 M

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Definitions:

Interest Rate

The part of a loan that is added as interest for the borrower, normally expressed as an annual percentage of the existing loan balance.

Reserve Ratio

The reserve ratio is the fraction of total deposits that a bank is required to hold in reserve and not loan out, acting as a regulatory tool to ensure the stability of the banking system.

Bank Reserves

Funds that banks hold to meet immediate withdrawal demands and regulatory requirements.

Money Supply

The total amount of money—coins, currency, and bank deposits—circulating in an economy.