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
yanalaym [24]
2 years ago
13

An unknown compound contains only carbon, hydrogen, and oxygen (CxHyOz). Combustion of 6.50 g of this compound produced 9.53 g o

f carbon dioxide and 3.90 g of water. If 6.50 g of the unknown compound contained 0.217 mol of C and 0.433 mol of H, how many moles of oxygen, O, were in the sample?
Chemistry
1 answer:
OverLord2011 [107]2 years ago
4 0

Answer:

There were 0.216 moles of oxygen in the sample

Explanation:

Step 1: Data given

Mass of compound = 6.50 grams

Mass of CO2 = 9.53 grams

Molar mass of CO2 = 44.01 g/mol

Mass of H2O = 3.90 grams

Molar mass H2O = 18.02 g/mol

Step 2: Calculate moles CO2

Moles CO2 = 9.53 grams / 44.01 g/mol

Moles CO2 = 0.217 moles

Step 3: Calculate moles C

For 1 mol CO2 we have 1 mol C

For 0.217 moles CO2 we have 0.217 moles C

Step 4: Calculate mass C

Mass C = 0.217 moles C *12.01 g/mol

Mass C = 2.61 grams

Step 5: calculate moles H2O

Moles H2O = 3.90 grams / 18.02 g/mol

Moles H2O = 0.216 moles

Step 6: Calculate moles H

In 1 mol H2O we have 2 moles H

In 0.216 moles H2O we have 0.433 moles H

Step 7: Calculate mass H

Mass H = 0.433 moles * 1.01 g/mol

Mass H = 0.437 grams

Step 8: Calculate mass O

Mass O = 6.50 grams - 2.61 grams - 0.437 grams

Mass O = 3.453 grams

Step 9: Calculate moles O

Moles O = 3.453 grams / 16.0 g/mol

Moles O = 0.216 moles

There were 0.216 moles of oxygen in the sample

You might be interested in
Mason notices that his boat sinks lower in the water in a freshwater lake than in the ocean. what could explain this
tino4ka555 [31]

Answer:

Mason notices that his boat sinks lower into the water in a freshwater lake than in the ocean. What could explain this?

Explanation:

The freshwater has less density then the ocean!

6 0
3 years ago
Why are the average atomic masses of some of the elements in parentheses?
Pie
Because its only representing the most stable isotope of that element but its considered the atomic mass and not average atomic mass
4 0
3 years ago
How many non-bonding electrons does phosphorus have?
Eddi Din [679]
10 non-bonding electrons 
8 0
3 years ago
Read 2 more answers
Identify the type of error in the following scenario. SCENARIO: A group is trying to find the volume of a given liquid. To do th
7nadin3 [17]

Answer:

Error of parallax it usually occurs when the cylinder is above or below the eye level,and thus resulting in differences In reading the millimeters

5 0
2 years ago
If a substance is soluble in water, it will _______in water. A. settle B. float C. dissolve D. all of these
MrRa [10]

C.Dissolve because its another word for soluble

6 0
3 years ago
Read 2 more answers
Other questions:
  • It is possible for a particular element to have various number of neutrons
    14·1 answer
  • Complete the sentence. Select all that apply. In the vertical columns of the periodic table:
    8·2 answers
  • Which of the following is a true statement about science?
    13·2 answers
  • The idea that light can act as packets led to what new field of science?
    5·2 answers
  • people are burning fossil fuels at a very fast rate. What is the effects? PLZ answe quick its due 2morrow
    15·1 answer
  • Most common energy source in cellular respiration
    12·2 answers
  • Saturated aqueous sodium chloride(d=1.2g/mL) is added to the following mixtures in order to dry the organic layer. Which layer i
    5·1 answer
  • Which of the following is an ionic compound?
    6·2 answers
  • Determine the fraction of an original sample of tritium that remains unchanged after 24.62 years.
    11·1 answer
  • Watch the animation and identify the correct conditions for forming a hydrogen bond.
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!