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
meriva
3 years ago
12

5.00 of a certain Compound X, known to be made of carbon, hydrogen and perhaps oxygen, and to have a molecular molar mass of 128

./gmol, is burned completely in excess oxygen, and the mass of the products carefully measured: product mass carbon dioxide 17.19g water 2.81g Use this information to find the molecular formula of X.
Chemistry
1 answer:
vitfil [10]3 years ago
6 0

Answer:C10H10

Explanation:

Use a balanced equation to determined quantity of carbon and hydrogen. Then use simple division to determine the empirical formula before the molecula formula

You might be interested in
The concentration of a saturated BaCl2 solution is 1.75 M (mol/liter) and the concentration of a saturated Na2SO4 solution is 2.
Kitty [74]

Answer:

a) The theoretical yield is 408.45g of BaSO_{4}

b) Percent yield = \frac{realyield}{408.45g}*100

Explanation:

1. First determine the numer of moles of BaCl_{2} and Na_{2}SO_{4}.

Molarity is expressed as:

M=\frac{molessolute}{Lsolution}

- For the BaCl_{2}

M=\frac{1.75molesBaCl_{2}}{1Lsolution}

Therefore there are 1.75 moles of BaCl_{2}

- For the Na_{2}SO_{4}

M=\frac{2.0moles[tex]Na_{2}SO_{4}}{1Lsolution}[/tex]

Therefore there are 2.0 moles of Na_{2}SO_{4}

2. Write the balanced chemical equation for the synthesis of the barium white pigment, BaSO_{4}:

BaCl_{2}+Na_{2}SO_{4}=BaSO_{4}+2NaCl

3. Determine the limiting reagent.

To determine the limiting reagent divide the number of moles by the stoichiometric coefficient of each compound:

- For the BaCl_{2}:

\frac{1.75}{1}=1.75

- For the Na_{2}SO_{4}:

\frac{2.0}{1}=2.0

As the BaCl_{2} is the smalles quantity, this is the limiting reagent.

4. Calculate the mass in grams of the barium white pigment produced from the limiting reagent.

1.75molesBaCl_{2}*\frac{1molBaSO_{4}}{1molBaCl_{2}}*\frac{233.4gBaSO_{4}}{1molBaSO_{4}}=408.45gBaSO_{4}

5. The percent yield for your synthesis of the barium white pigment will be calculated using the following equation:

Percent yield = \frac{realyield}{theoreticalyield}*100

Percent yield = \frac{realyield}{408.45g}*100

The real yield is the quantity of barium white pigment you obtained in the laboratory.

7 0
3 years ago
The rate of acceleration of an object is determined by the mass of the object and...
GREYUIT [131]

Answer:

a. forces acting on the object

7 0
3 years ago
What are the answers please help
LenaWriter [7]
Thank you for the free 15 points .
4 0
3 years ago
On September 23 The earths axis is tilted which way?
Mariana [72]

Answer:

The earth is tilted so its perpendicular

Explanation:

Because its straight up and down

3 0
3 years ago
I need help I can't chose between A or D
djyliett [7]
That’s a hard one, but honestly i would go with a.
7 0
3 years ago
Read 2 more answers
Other questions:
  • What does the suffix -ide indicate when naming an ionic compound?
    9·1 answer
  • Which of the following statements best describes a difference between mechanical waves and electromagnetic waves?
    11·1 answer
  • Which of the following is a way your body fights a bacterial infection? Fever Shivers Sweats Increased heart rate
    8·2 answers
  • Which describes the boundary where earthquake activity occurs along rift valleys? divergent boundary in the ocean divergent boun
    11·2 answers
  • Balance in basic solution: O2(g) + Cr³+ (aq) → H₂O2 (1) + Cr₂O7²- (aq)
    15·1 answer
  • 5. What types of surfaces would result in greater friction?
    5·1 answer
  • What is the weight of an object that has a mass of 100 kg?<br> • 100 N<br> • 200 N<br> • 980 N
    13·1 answer
  • During photosynthesis, carbon dioxide and water react to produce glucose and oxygen. Which statement explains why photosynthesis
    13·1 answer
  • According to our textbook, write the formula for the anhydrous compound that was part of the mixture called natron that was used
    5·1 answer
  • If you were to conduct an experiment to answer the question, "Does the volume of a caffeinated drink affect your reaction time?”
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!