dentify the numbers in each of the following statements as measured or exact: b. A patient is given 2 tablets of medication.

Measured numbers are values obtained through measurement and can vary due to limitations in precision and accuracy. They include values that are subject to uncertainty, such as the length of an object or the volume of a liquid. In scientific contexts, these numbers often come with a degree of error, reflecting the reliability of the measurement process.

Exact numbers are values that are counted or defined and have no uncertainty associated with them. They are typically whole numbers, such as the number of students in a classroom or the number of tablets in a package. Exact numbers are considered to have an infinite number of significant figures, making them precise and reliable for calculations.

Significant figures are the digits in a number that contribute to its precision, including all non-zero digits, any zeros between significant digits, and trailing zeros in the decimal portion. Understanding significant figures is crucial for determining the accuracy of measured numbers and for performing calculations in chemistry, as it helps convey the reliability of the data being used.