The EPA Has Determined That the Maximum Safe Level of Lead

question 62

Multiple Choice

The EPA has determined that the maximum safe level of lead ion in drinking water is 15 ppb.If a sample of tap water has a lead ion concentration of 0.016 ppm, what is the concentration of the lead ion in ppb, and is the water safe to drink? Assume the density of the solution is 1.00 g/mL.

• A)160 ppb, not safe
• B)16 ppb, not safe
• C)1600 ppb, not safe
• D)0.16 ppb, safe
• E)1.6 * 10^-6 ppm, safe

---

Definitions:

Accounts Receivable

Money owed to a company by its customers for goods or services that have been delivered or sold but not yet paid for.

Working Capital

The disparity between a firm's existing resources and its short-term obligations, showcasing its ability to fulfil financial commitments and operational prowess.

Current Assets

Resources anticipated to be transformed into cash, sold off, or used up either within a year or over the span of the business's regular operational cycle, depending on which is more extended.

Current Liabilities

Short-term financial obligations that a company is expected to pay within one year.