Question

Identify the numbers in each of the following statements as measured or exact: a. A patient weighs 155 lb. b. A patient is given 2 tablets of medication. c. In the metric system, $1 \mathrm{L}$ is equal to $1000 \mathrm{mL}$. d. The distance from Denver, Colorado, to Houston, Texas, is $1720 \mathrm{km}$.

Name: Problem 7, Chapter 2: Chemistry: An Introduction to General, Organic, and Biological Chemistry
Uploaded: 2020-06-14T23:21:02-08:00
Duration: 1 min 52 s
Channel: Luz Esteban-Torres
Description: Identify the numbers in each of the following statements as measured or exact: a. A patient weighs 155 lb. b. A patient is given 2 tablets of medication. c. In the metric system, 1 L is equal to 1000 mL. d. The distance from Denver, Colorado, to Houston, Texas, is 1720 km.

   Identify the numbers in each of the following statements as measured or exact:
a. A patient weighs 155 lb.
b. A patient is given 2 tablets of medication.
c. In the metric system, $1 \mathrm{L}$ is equal to $1000 \mathrm{mL}$.
d. The distance from Denver, Colorado, to Houston, Texas, is $1720 \mathrm{km}$.

Chemistry: An Introduction to General, Organic, and Biological Chemistry

Karen C. Timberlake 12th Edition

Chapter 2, Problem 7

Instant Answer

Solved by Expert Luz Esteban-Torres

06/14/2020

Step 1

Measured numbers are obtained by using some sort of measuring device, like a scale or a ruler. Exact numbers, on the other hand, are counted or defined quantities. Show more…

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Identify the numbers in each of the following statements as measured or exact: a. A patient weighs 155 lb. b. A patient is given 2 tablets of medication. c. In the metric system, $1 \mathrm{L}$ is equal to $1000 \mathrm{mL}$. d. The distance from Denver, Colorado, to Houston, Texas, is $1720 \mathrm{km}$.

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Key Concepts

Measured Numbers

Measured numbers are values obtained through observation or physical measurement. They typically involve an element of uncertainty due to factors like instrument precision, observational error, or rounding. Examples include a patient's weight or the distance between two locations, where the value is approximate rather than exact.

Exact Numbers

Exact numbers are values that are either defined by convention or result from a counting process, leaving no room for measurement uncertainty. They include things like count values or conversion factors defined exactly by the system of units, such as the number of milliliters in a liter.

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