1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Readme [11.4K]
3 years ago
14

A compound contains only carbon, hydrogen, and oxygen. Combustion of 10.68 mg of the compound yields 16.01 mg and 4.37 mg . The

molar mass of the compound is 176.1 g/mol. What are the empirical and molecular formulas of the compound
Chemistry
1 answer:
Verizon [17]3 years ago
5 0

Answer: See below

Explanation:

n of CO2​ = 0.364mmol

Mass of C = 0.364*12 = 4.368 mg

n of H2​O = 184.37​ = 0.243 mol

The compound has 2*0.243mmol of H

Mass of H = 0.486 mg

Mass of O = 10.68 − (4.368+0.486) = 5.826mg

Moles of O = 0.364

<u>C:H:O Ratios</u>

0.364 : 0.486 : 0.364

= 1 : 1.34 : 1

= 3 : 4 : 3

<u>So the empirical formula is C3​H4​O3​,</u>

Empirical formula mass

= 88= 2 × Molar mass

<u>And the molecular formula is C6​H8​O6</u>

You might be interested in
Which is the correct molar mass for the compound h2SO4
AlladinOne [14]

Explanation: just add the atomic masses on the periodic table together for each atom.

4 0
3 years ago
Which atom has only one pair of electrons in its outermost energy level?
inysia [295]

Answer:

i belive A, i cold be wrong tho, pls tell me if im right if you fully find out

ght. Explanation:

8 0
3 years ago
Which of the following is the best hypothesis?
DerKrebs [107]

Answer:

B.) If sodium carbonate is added to vinegar, the reaction will absorb heat.

Explanation:

A.) is incorrect because this is not testable. Rather, it is just an opinion that cannot be proven correct or incorrect.

B.) is correct because this statement is testable. Tests need to be run to determine the accuracy of the statement.

C.) is incorrect because this statement explains something that does not need to be tested. It is an example of a physical change when one tears a piece of paper.

D.) is incorrect because this is already a true statement. It is obvious that not all reactions absorb/release heat. While tests could be run to further prove this statement true, it is already considered accurate.

4 0
2 years ago
Read 2 more answers
True or false The atomic number of an element is always more than the mass number of that element.
Veseljchak [2.6K]
The sentence is true
8 0
3 years ago
Why does water have a much higher boiling point than methane even though water (H20) and methane (CH4) molecules are approximate
PSYCHO15rus [73]

Answer:

Water has a higher boiling point because the hydrogen bonds that form water molecules are stronger than the Van der Waals interactions among methane molecules, therefor more energy must be provided in order to break the hydrogen bonds and allow the water molecules to escape the liquid state.

Explanation:

5 0
3 years ago
Read 2 more answers
Other questions:
  • How can you increase the boiling point of water?
    8·1 answer
  • Which statement best describes the process of making a solution by diluting a stock solution?
    7·2 answers
  • At standard pressure, the total amount of heat required to completely vaporize a 100. gram sample of water at its boiling point
    8·1 answer
  • A constant-volume calorimeter was calibrated by carrying out a reaction known to release 3.50 kJ of heat in 0.200 L of solution
    12·1 answer
  • If water (p=998 kg/m3, u = 10-3 Pa.s) flows through a 50 m Pa.s) determine the velocity of carbon tetrac me the velocity of carb
    11·1 answer
  • A marked price
    10·1 answer
  • Wetlands provide habitats for many living things because of their sheltered waters and what other feature?
    8·1 answer
  • 1.) What is the difference between renewable and nonrenewable resources?
    7·1 answer
  • Salt water has a density of 1.183g/mL. A ball has a density of 0.0134 g/mL. Will the ball float or sink?
    5·1 answer
  • What is the main difference between active transport and passive transport? *
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!