Write a ratio showing the relationship between the molar amounts of each element for each compound. (See Appendix IIA for color codes.) (a)
Ch.3 - Molecules, Compounds & Chemical Equations
Chapter 3, Problem 81c
Determine the number of moles of hydrogen atoms in each sample. c. 2.4 mol C6H12

1
Identify the chemical formula of the compound: \( \text{C}_6\text{H}_{12} \).
Determine the number of hydrogen atoms in one molecule of \( \text{C}_6\text{H}_{12} \). There are 12 hydrogen atoms per molecule.
Use the given amount of moles of \( \text{C}_6\text{H}_{12} \), which is 2.4 moles.
Calculate the total number of moles of hydrogen atoms by multiplying the number of moles of \( \text{C}_6\text{H}_{12} \) by the number of hydrogen atoms per molecule: \( 2.4 \text{ mol} \times 12 \text{ H atoms/molecule} \).
The result will give you the total moles of hydrogen atoms in the sample.

Verified video answer for a similar problem:
This video solution was recommended by our tutors as helpful for the problem above.
Video duration:
44sWas this helpful?
Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Moles and Avogadro's Number
A mole is a unit in chemistry that represents 6.022 x 10^23 entities, such as atoms or molecules. This concept is fundamental for quantifying substances in chemical reactions and allows chemists to convert between the mass of a substance and the number of particles it contains.
Recommended video:
Guided course
Moles and Particles Conversion
Chemical Formula Interpretation
The chemical formula of a compound provides information about the types and numbers of atoms present. For example, C6H12 indicates that each molecule contains 6 carbon atoms and 12 hydrogen atoms, which is essential for calculating the total number of hydrogen atoms in a given number of moles.
Recommended video:
Guided course
Intepreting the Band of Stability
Stoichiometry
Stoichiometry is the area of chemistry that deals with the relationships between the quantities of reactants and products in chemical reactions. It allows for the calculation of the number of moles of different elements in a compound, facilitating the determination of how many atoms are present in a sample based on its moles.
Recommended video:
Guided course
Stoichiometry Concept
Related Practice
Textbook Question
576
views
Textbook Question
Write a ratio showing the relationship between the molar amounts of each element for each compound. (See Appendix IIA for color codes.) (b)
488
views
Textbook Question
Determine the number of moles of hydrogen atoms in each sample. a. 0.0885 mol C4H10 b. 1.3 mol CH4
3429
views
Textbook Question
Determine the number of moles of hydrogen atoms in each sample. d. 1.87 mol C8H18
711
views
Textbook Question
Determine the number of moles of oxygen atoms in each sample. a. 4.88 mol H2O2 b. 2.15 mol N2O c. 0.0237 mol H2CO3 d. 24.1 mol CO2
3869
views
1
comments
Textbook Question
Calculate mass (in grams) of sodium in 8.5 g of each sodium containing food additive. a. NaCl (table salt) b. Na3PO4 (sodium phosphate) c. NaC7H5O2 (sodium benzoate) d. Na2C6H6O7 (sodium hydrogen citrate)
1921
views