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
ziro4ka [17]
3 years ago
8

A mixture of C3H8 and C2H2 has a mass of 2.8 g. It is burned in excess O2 to form a mixture of water and carbon dioxide that con

tains 1.6 times as many moles of CO2 as of water.
Find the mass of C2H2 in the original mixture. Express your answer to two significant figures and include the appropriate units.
Chemistry
1 answer:
astraxan [27]3 years ago
4 0

Answer:

The mass of C2H2 in the mixture is 0.56gram using the ratio of carbon in the products contributed by the C2H2.

Explanation:

The balanced equation for the reaction is: C3H8 + 2C2H2 + 10O2 >> 7CO2 + 6H2O.

From the reaction, we know that the oxygen was in excess, this will make the Carbon sources the limiting agents in the reaction. The details of the reaction showed that the ratio of water to the carbon dioxide is 1.6:1. This also means that the expected mole of carbon dioxide will be 7/1.6, which is 3.75moles.

The individual balanced equation of reaction is:

C3H3 +5O2 >> 3CO2 + 4H2O

and 2C2H2 + 5O2 >>4CO2 + 2H2O. From this one can quickly tell that the propane is in sufficient supply as it produces 3 moles of CO2 out of the expected 3.75 moles obtained above. Leaving 0.75moles of CO2 to the ethyne.

The mass of ethyne in the mixture will therefore be: 0.75/3.75 X 2.8 = 0.56g.

You might be interested in
What is the amount of moles in 67 g of C​
Tju [1.3M]

Answer:The molar mass of atoms of an element is given by the standard relative atomic mass of the element multiplied by the molar mass constant, 1 × 10−3 kg/mol = 1 g/mol.

Explanation:

3 0
2 years ago
2. A chemical analysis of a sample provides the following elemental data:
Vadim26 [7]

Answer:

C3 H6 O2

Explanation:

first divide their mass by their respective molar mass, we get:

30.4 moles of C

61.2 moles of H

20.25 moles of O

now divide everyone by the smallest one of them then we get

C= 1.5

H= 3

O= 1

since our answer of C is not near to any whole number so we will multiply all of them by 2

so,

C3 H6 O2 is our answer

3 0
1 year ago
Can u helmp me, i can give u a 25 points
tester [92]
They’re less reactive, they don’t react quickly with water or oxygen which they resist corrosion.

Answer : true
5 0
3 years ago
ASAP I AM GIVING BRAINLIEST PLEASEEEEEEEEE HELPPPPPPPPPPPPPPPPPP
zepelin [54]

Answer:

B?

Explanation:

In the example, the amount of hydrogen is 202,650 x 0.025 / 293.15 x 8.314472 = 2.078 moles. Use the mass of the hydrogen gas to calculate the gas moles directly; divide the hydrogen weight by its molar mass of 2 g/mole. For example, 250 grams (g) of the hydrogen gas corresponds to 250 g / 2 g/mole = 125 moles.

7 0
3 years ago
A boy kicks a ball with a force of 40 N. At exactly the same moment, a gust of wind blows in the opposite direction of the kick
aliya0001 [1]
B, the opposing forces are the same, thus, the ball doesn't move back or forward.
8 0
3 years ago
Read 2 more answers
Other questions:
  • The characteristics that best describe the tail of a phospholipid molecule are _____?
    13·2 answers
  • Answer these questions :) please
    8·1 answer
  • Please help me!!!!!!​
    9·1 answer
  • 9, What is an Independent
    14·1 answer
  • What are the characteristics of smooth muscle?
    15·2 answers
  • For which set of crystallographic planes will a first-order diffraction peak occur at a diffraction angle of 44.53° for FCC nick
    13·1 answer
  • The type of bond formed between two atoms can be predicted on the basis of ___?​
    13·1 answer
  • In the titration of 82.0 mL of 0.400 M HCOOH with 0.150 M LiOH, how many mL of LiOH are required to reach the equivalence point
    13·1 answer
  • Is a squirrel eating acorns and a fire burning a good examples of chemical energy
    8·2 answers
  • What is the molality of a solution containing 15 g NaCl dissolved in 50 g of water
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!