Textbook Question
Write the formula for ibuprofen: 13 carbons, 18 hydrogens, and 2 oxygens. What are the common uses of ibuprofen?
2019
views
Ch.1 Matter and Measurements
McMurry8th EditionFundamentals of GOBISBN: 9780134015187
Not the one you use?Change textbookSelect a different textbook
Table of contents
- Ch.1 Matter and Measurements27
- Ch.2 Atoms and the Periodic Table20
- Ch.3 Ionic Compounds8
- Ch.4 Molecular Compounds23
- Ch.5 Classification & Balancing of Chemical Reactions12
- Ch.6 Chemical Reactions: Mole and Mass Relationships28
- Ch.7 Chemical Reactions: Energy, Rate and Equilibrium64
- Ch.8 Gases, Liquids and Solids24
- Ch.9 Solutions52
- Ch.10 Acids and Bases25
- Ch.11 Nuclear Chemistry22
- Ch.12 Introduction to Organic Chemistry: Alkanes57
- Ch.13 Alkenes, Alkynes, and Aromatic Compounds47
- Ch.14 Some Compounds with Oxygen, Sulfur, or a Halogen50
- Ch.15 Aldehydes and Ketones45
- Ch.16 Amines42
- Ch.17 Carboxylic Acids and Their Derivatives57
- Ch.18 Amino Acids and Proteins82
- Ch.19 Enzymes and Vitamins63
- Ch.20 Carbohydrates44
- Ch.21 The Generation of Biochemical Energy65
- Ch.22 Carbohydrate Metabolism45
- Ch.23 Lipids42
- Ch.24 Lipid Metabolism33
- Ch.25 Protein and Amino Acid Metabolism24
- Ch.26 Nucleic Acids and Protein Synthesis45
Chapter 1, Problem 78a
The white blood cell concentration in normal blood is approximately 12,000 cells/mm3 of blood. How many white blood cells does a normal adult with 5 L of blood have? Express the answer in scientific notation.
Verified step by step guidance1
Step 1: Start by identifying the given information. The white blood cell concentration is 12,000 cells/mm², and the total blood volume is 5 L. Note that we need to convert the blood volume from liters to cubic millimeters (mm³) since the concentration is given in cells per mm².
Step 2: Use the conversion factor for volume: 1 L = 1,000 mL and 1 mL = 1,000 mm³. Therefore, 1 L = 1,000,000 mm³. Multiply the given blood volume (5 L) by this conversion factor to find the total blood volume in mm³.
Step 3: Recognize that the concentration is given in cells per mm², but we need to express the total number of cells. Assume the blood is evenly distributed in a 1 mm thickness layer, so the concentration in cells/mm² is equivalent to cells/mm³. This allows us to directly multiply the concentration by the total blood volume in mm³.
Step 4: Multiply the white blood cell concentration (12,000 cells/mm³) by the total blood volume in mm³ (calculated in Step 2). This will give the total number of white blood cells in the blood.
Step 5: Express the result in scientific notation by adjusting the decimal point and using the appropriate power of 10. Ensure the final answer is formatted correctly as required.
Verified video answer for a similar problem:
This video solution was recommended by our tutors as helpful for the problem above.
Video duration:
2mWas this helpful?
Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
White Blood Cell Concentration
White blood cell concentration refers to the number of white blood cells (WBCs) present in a specific volume of blood, typically measured in cells per cubic millimeter (cells/mm^3). In normal adults, this concentration is approximately 12,000 cells/mm^3, which is crucial for understanding immune function and diagnosing various health conditions.
Recommended video:
Guided course
00:52
Percent Concentrations Concept 1
Volume of Blood
The volume of blood in an adult human is generally around 5 liters. This total blood volume is important for calculating the total number of cells in the bloodstream, as it provides the necessary context for converting concentration measurements into absolute quantities of cells.
Recommended video:
Guided course
1:52Ketone Bodies Concept 3
Scientific Notation
Scientific notation is a method of expressing numbers that are too large or too small to be conveniently written in decimal form. It is typically formatted as a number between 1 and 10 multiplied by a power of ten (e.g., 1.2 x 10^4). This notation simplifies calculations and comparisons, especially in scientific contexts.
Recommended video:
Guided course
01:41Scientific Notation
Related Practice
Textbook Question
What is the difference between a physical quantity and a number?
2893
views
Textbook Question
Give the full name of the following units:
a. cc
b. dm
c. mm
d. nL
e. mg
f. m3
1544
views
Textbook Question
Calculate the specific heat of copper if it takes 23 cal (96 J) to heat a 5.0 g sample from 25 °C to 75 °C.
1674
views
Textbook Question
The specific heat of fat is 0.45 cal/(g ⋅ °C) (1.9 J/g °C) and the density of fat is 0.94 g/cm3. How much energy (in calories and joules) is needed to heat 10 cm3 of fat from room temperature (25 °C) to its melting point (35 °C)?
2550
views
1
rank
Textbook Question
When 100 cal (418 J) of heat is applied to a 125 g sample, the temperature increases by 28 °C. Calculate the specific heat of the sample and compare your answer to the values in Table 1.10. What is the identity of the sample?
1551
views