Concept explainers
The combustion of 3.795 mg of liquid B, which contains only C, H, and O, with excess oxygen gave 9.708 mg of CO2 and 3.969 mg of H2O. In a molar mass determination, 0.205 g of B vaporized at 1.00 atm and 200.0°C and occupied a volume of 89.8 mL. Derive the empirical formula, molar mass, and molecular formula of B and draw three plausible structures.

Interpretation:
Empirical formula, molar mass and molecular formula of B have to be derived; three plausible structures have to be drawn.
Concept introduction:
Steps to calculate empirical formula:
- Convert the mass of elements into moles.
- Divide each mole value by the smallest number of moles calculated.
- Round to the nearest whole number.
Number of moles = Molarity
Explanation of Solution
Calculate moles of each given elements:
The mass of oxygen is found by difference:
Convert moles of carbon into mass in mg:
Convert moles of hydrogen into mass in mg:
This gives the formula
Now, let’s calculate moles using the ideal gas equation, and then calculate the molar mass.
The formula mass of
Want to see more full solutions like this?
Chapter 24 Solutions
ALEKS 360; 18WKS F/ GEN. CHEMISTRY >I<
- V Biological Macromolecules Drawing the Haworth projection of an aldose from its Fischer projection Draw a Haworth projection of a common cyclic form of this monosaccharide: H C=O HO H HO H H OH CH₂OH Explanation Check Click and drag to start drawing a structure. Xarrow_forwardComplete the mechanismarrow_forwardComplete the mechanismarrow_forward
- 8 00 6 = 10 10 Decide whether each of the molecules in the table below is stable, in the exact form in which it is drawn, at pH = 11. If you decide at least one molecule is not stable, then redraw one of the unstable molecules in its stable form below the table. (If more than unstable, you can pick any of them to redraw.) Check OH stable HO stable Ounstable unstable O OH stable unstable OH 80 F6 F5 stable Ounstable X Save For Later Sub 2025 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy C ཀྭ་ A F7 매 F8 F9 4 F10arrow_forwardJust try completing it and it should be straightforward according to the professor and TAs.arrow_forwardThe grading is not on correctness, so if you can just get to the correct answers without perfectionism that would be great. They care about the steps and reasoning and that you did something. I asked for an extension, but was denied the extension.arrow_forward
- Chemistry: The Molecular ScienceChemistryISBN:9781285199047Author:John W. Moore, Conrad L. StanitskiPublisher:Cengage LearningOrganic ChemistryChemistryISBN:9781305580350Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. FootePublisher:Cengage LearningChemistry: Matter and ChangeChemistryISBN:9780078746376Author:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl WistromPublisher:Glencoe/McGraw-Hill School Pub Co
- Chemistry for Engineering StudentsChemistryISBN:9781337398909Author:Lawrence S. Brown, Tom HolmePublisher:Cengage Learning


