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
givi [52]
3 years ago
5

Calculate mole fraction of ethyleneGlycol in solutioncontaining 20% g C2H6O2 by mass.​

Chemistry
1 answer:
Artist 52 [7]3 years ago
7 0

Answer:

Explanation:

20% of C2H6O2 

since its a solution, this means that it has 20g of ethylene glycol and the rest is water.

Molar mass of C2H6O2 = (12 x 2) + (1 x 6) + (2 x 16)

                                        = 62

mole = mass/molar mass

Moles of C2H6O2 = 20/62

                               = 0.322 mol

Moles of water = 80/18

                         = 4.444 mol

mole fraction = mol of solute / tatal mol of solution

Mole fraction of ethylene glycol = 0.322/(0.322 + 4.444)

                                                      = 0.068

Mole fraction of water = 1 - 0.068

                                     = 0.932

You might be interested in
How many liters of carbon dioxide will be produced when 89.5 L of ethane are burned? (One mole of any gas occupies 22.4 L under
yan [13]

Answer:

179 L of CO2

Explanation:

Given the equation of the reaction;

C2H6(g) + 7/2 O2(g) -------> 2CO2(g) + 3H2O(g)

Now 1 mole of ethane yields 2 moles of CO2 from the balanced reaction equation

1 mole of a gas occupies 22.4 L volume so,

22.4 L of ethane yields 44.8 L of CO2

89.5 L of ethane yields 89.5 * 44.8/22.4 = 179 L of CO2

4 0
3 years ago
What does erosion do?
Westkost [7]
I think the answer is A. breaks rocks apart. 
8 0
3 years ago
Read 2 more answers
Weathering of rock and sedimentation ultimately lead to the formation of___
Inga [223]
Weathering of the rock and sedimentation are decomposition processes. Through time, the minerals in the rocks soften due to pressure and heat. So, they crumble down and reduce in terms of size. Once they do, they become sand or part of the soil. So, the answer is A.
6 0
3 years ago
Read 2 more answers
How many moles of dinitrogen monoxide are present in 9.3 x 10^22 molecules of this compound?
Step2247 [10]

Answer:

<h2>0.15 moles</h2>

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

n =  \frac{N}{L} \\

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities.

From the question we have

n =  \frac{9.3 \times  {10}^{22} }{6.02 \times  {10}^{23} }  \\  = 0.154485...

We have the final answer as

<h3>0.15 moles</h3>

Hope this helps you

8 0
3 years ago
Why does an ion have a charge <br> Help please:)
Ksivusya [100]

Answer:

An ion is charged because the number of electrons does not equal the amount of particles.

Explanation:

Can be positive (meaning more protons than electrons) and it can be negatively charged (meaning there are more electrons than protons).

Hope this helps!

8 0
3 years ago
Read 2 more answers
Other questions:
  • How many MOLES of boron tribromide are present in 3.20 grams of this compound ?
    11·1 answer
  • Why do we use gold and silver to make jewellery?
    11·1 answer
  • For a hydrogen atom, which electronic transition would result in the emission of a photon with the highest energy?
    11·1 answer
  • Which answer below is not an indication that a chemical reaction has occurred?
    5·1 answer
  • What is the pH of a 5.41g of HNO3 in 7L of solution? (mass of HNO3=63.02g)
    14·1 answer
  • If you have 9900 g of donuts, how many donuts do you have if each donut has a mass of 159 g?
    10·2 answers
  • Which properties do all liquids share?
    9·1 answer
  • Explain the application of silver halides in darkening effect in industry
    11·1 answer
  • Which chemical equations show an oxidation- reduction reaction
    14·1 answer
  • How many moles are in 91.5 grams of Helium?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!