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
GaryK [48]
3 years ago
12

A solution contains 6.21 g of ethylene glycol dissolved in 25.0 g of water. If water has a boiling point elevation constant of 0

.512°C•kg/mol, what is the boiling point of the solution? (molar mass of ethylene glycol = 62.1 g/mol; boiling point of pure water = 100.00°C)
Chemistry
2 answers:
adell [148]3 years ago
7 0
The answer is D.) i just took the quiz
timurjin [86]3 years ago
5 0
Calculate first the number of moles of ethylene glycol by dividing the mass by the molar mass.
                           n = (6.21 g ethylene glycol) / 62.1 g/mol
                              n = 0.1 mol
Then, calculate the molality by dividing the number of moles by the mass of water (in kg).
                           m = 0.1 mol/ (0.025 kg) = 4m
Then, use the equation,
                       Tb,f = Tb,i + (kb)(m)
Substituting the known values,
                       Tb,f = 100°C + (0.512°C.kg/mol)(4 mol/kg)
                          <em>Tb,f = 102.048°C</em>
You might be interested in
When the following molecular equation is balanced using the smallest possible integer coefficients, the values of these coeffici
tatuchka [14]

The values of the coefficients would be 4, 5, 4, and 6 respectively.

<h3>Balancing chemical equations</h3>

The equation of the reaction can be represented by the following chemical equation:

ammonia (g) + oxygen (g) ---> nitrogen monoxide (g) + water (g)

  4NH_3(g)     +    5O_2(g)        --->           4NO(g)              +  6H_2O(g)

Thus, the coefficient of ammonia will be 4, that of oxygen will be 5, that of nitrogen monoxide will be 4, and that of water will be 6.

More on balancing chemical equations can be found here: brainly.com/question/15052184

#SPJ1

5 0
2 years ago
If the molar mass of the compound in problem 1 is 110 grams/mole, what is the molecular formula? With work?
tatyana61 [14]
C6H6O2 is the answer 
3 0
3 years ago
As a boy blows up people on its volume increases
Marina86 [1]

Answer:

popogfrddeeddtttttt

6 0
3 years ago
The reaction below can be catalyzed by bromine (Br2). if you carried out such a reaction, which compound would you expect to fin
Vika [28.1K]

The answer is Br₂ since catalysts are regenerated at the end of a reaction.

3 0
3 years ago
Which part of an atom is mostly empty space?
Brilliant_brown [7]
I’m pretty sure it’s B

Hope that helps

7 0
3 years ago
Other questions:
  • What conditions are required for heat transfer between states of matter to occur? In what
    13·1 answer
  • Multiple Questions, Brainliest and 98 points to whoever answers all questions correctly
    10·2 answers
  • What is the pressure of 5.0 Mol nitrogen (N2) gas in a 2.0 L container at 268 K?
    7·1 answer
  • How many electrons would be found in the ion whose symbol is given below ? <br> N3-
    14·1 answer
  • 1. Why is the majority of freshwater not available for use?
    8·1 answer
  • How many moles are there in 545g of <img src="https://tex.z-dn.net/?f=" id="TexFormula1" title="" alt="" align="absmiddle" class
    14·1 answer
  • It would most likely be difficult to collect a sample of which isotope? Pb-206 Po-214 U-234 Ra-226
    6·2 answers
  • Why is it always blond hair blue eyes<br> and you should listen to the song brown eyes brown hair
    5·1 answer
  • Electrons must be able to flow through a material in order for the material to conduct
    8·1 answer
  • Investigations were carried out in a science lab to explore the topic of chemical and physical changes.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!