A Solution Contains 30 Ppm of Some Heavy Metal and the Density

question 124

Multiple Choice

A solution contains 30 ppm of some heavy metal and the density of the solution is This means that ________.

• A)100 g of the solution contains 30 g of heavy metal
• B)100 g of the solution contains 30 mg of heavy metal
• C)the solution is 30% by mass of heavy metal
• D)there are 30 mg of the heavy metal in 1.0 L of this solution
• E)the molarity of the solution is 30 M

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Definitions:

Operational Definition

A statement of the procedures or ways in which a research concept is measured and turned into a variable.

Inferential Statistics

A branch of statistics that allows us to infer trends about a population based on samples from that population.

Hypothesis

A proposed explanation for a phenomenon, intended to be tested through experimentation or observation.

Scientific Theory

A well-substantiated explanation of some aspect of the natural world, based on a body of facts that have been repeatedly confirmed through observation and experimentation.