Textbook Question
The average U.S. farm occupies 435 acres. How many square miles is this? (1 acre = 43,560 ft2, 1 mile = 5280 ft)
1201
views
1
rank
Ch.1 - Matter, Measurement & Problem Solving
Tro6th EditionChemistry: A Molecular ApproachISBN: 9780137832217
Not the one you use?Change textbookSelect a different textbook
Table of contents
- Ch.1 - Matter, Measurement & Problem Solving90
- Ch.2 - Atoms & Elements94
- Ch.3 - Molecules and Compounds103
- Ch.4 - Chemical Reactions and Chemical Quantities46
- Ch.5 - Introduction to Solutions and Aqueous Solutions65
- Ch.6 - Gases100
- Ch.7 - Thermochemistry85
- Ch.8 - The Quantum-Mechanical Model of the Atom51
- Ch.9 - Periodic Properties of the Elements79
- Ch.10 - Chemical Bonding I: The Lewis Model70
- Ch.11 - Chemical Bonding II: Molecular Shapes, VSEPR & MO Theory68
- Ch.12 - Liquids, Solids & Intermolecular Forces44
- Ch.13 - Solids & Modern Materials42
- Ch.14 - Solutions77
- Ch.15 - Chemical Kinetics88
- Ch.16 - Chemical Equilibrium57
- Ch.17 - Acids and Bases121
- Ch.18 - Aqueous Ionic Equilibrium126
- Ch.19 - Free Energy & Thermodynamics80
- Ch.20 - Electrochemistry87
- Ch.21 - Radioactivity & Nuclear Chemistry61
- Ch.22 - Organic Chemistry114
Chapter 1, Problem 108
An ibuprofen suspension for infants contains 100 mg/5.0 mL suspension. The recommended dose is 10 mg/kg body weight. How many mL of this suspension should be given to an infant weighing 18 lb? (Assume two significant figures.)
Verified step by step guidance1
Convert the infant's weight from pounds to kilograms using the conversion factor: 1 lb = 0.453592 kg.
Calculate the recommended dose in milligrams for the infant by multiplying the infant's weight in kilograms by the dose per kilogram (10 mg/kg).
Determine the concentration of ibuprofen in the suspension, which is given as 100 mg per 5.0 mL.
Calculate the volume of suspension needed by using the formula: Volume (mL) = (Recommended dose in mg) / (Concentration in mg/mL).
Ensure the final answer is expressed with two significant figures, as required by the problem.
Verified video answer for a similar problem:
This video solution was recommended by our tutors as helpful for the problem above.
Was this helpful?
Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Dosage Calculation
Dosage calculation involves determining the appropriate amount of medication to administer based on a patient's weight. In this case, the recommended dose of ibuprofen is 10 mg per kg of body weight, which requires converting the infant's weight from pounds to kilograms to ensure accurate dosing.
Recommended video:
Guided course
02:28
Stoichiometric Rate Calculations
Unit Conversion
Unit conversion is the process of converting a measurement from one unit to another. Here, it is necessary to convert the infant's weight from pounds to kilograms, knowing that 1 kg is approximately 2.20462 lbs. This conversion is crucial for applying the correct dosage based on the weight in kg.
Recommended video:
Guided course
01:56Conversion Factors
Concentration of Suspension
The concentration of a suspension indicates how much active ingredient is present in a given volume. In this case, the ibuprofen suspension has a concentration of 100 mg per 5.0 mL. Understanding this concentration allows for the calculation of how many mL of suspension are needed to achieve the required dosage based on the infant's weight.
Recommended video:
Guided course
02:38Suspensions and Colloids
Related Practice
Textbook Question
An acetaminophen suspension for infants contains 80 mg/0.80 mL suspension. The recommended dose is 15 mg/kg body weight. How many mL of this suspension should be given to an infant weighing 14 lb? (Assume two significant figures.)
4666
views
2
comments
Textbook Question
Determine the number of picoseconds in 2.0 hours.
778
views
Textbook Question
Classify each property as intensive or extensive. a. volume b. boiling point c. temperature d. electrical conductivity e. energy
921
views
Textbook Question
Total U.S. farmland occupies 954 million acres. How many square miles is this? (1 acre = 43,560 ft2, 1 mi = 5280 ft). Total U.S. land area is 3.537 million square miles. What percentage of U.S. land is farmland?
2594
views