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
Cloud [144]
3 years ago
9

A 1.26 m aqueous solution of an ionic compound with the formula mx2 has a boiling point of 101.63 ∘c. part a calculate the van't

hoff factor (i) for mx2 at this concentration. express your answer using two significant figures.
Chemistry
2 answers:
iragen [17]3 years ago
6 0

Answer:

The van't hoff factor is 2.49

Explanation:

please look at the solution in the attached Word file

Download docx
12345 [234]3 years ago
5 0

<span>Answer is: Van't Hoff factor (i) for this solution is 1.051 .
Change in boiling point from pure solvent to solution: ΔT =i · Kb · b.
Kb - </span><span>molal boiling point elevation constant</span><span> is 0.512°C/m.
b -  molality, moles of solute per kilogram of solvent.
b = 1.26 m.
ΔT = 101.63°C - 100</span>°C = 1.63°C.

i = 1.63°C ÷ (0.512°C/m · 1.26 m).

i = 1.051.

You might be interested in
As you move from bottom on the periodic table to the top shielding
masha68 [24]

Answer:

AS we move from bottom to top on periodic table shielding decreased.

Explanation:

As we move from left to right across the periodic table the number of valance electrons in an atom increase. The atomic size tend to decrease in same period of periodic table because the electrons are added with in the same shell. When the electron are added, at the same time protons are also added in the nucleus. The positive charge is going to increase and this charge is greater in effect than the charge of electrons. This effect lead to the greater nuclear attraction.

As we move down the group atomic radii increased with increase of atomic number. The addition of electron in next level cause the atomic radii to increased. The hold of nucleus on valance shell become weaker because of shielding of electrons thus size of atom increased.

As we move from bottom to top the energy level decreased because of decreased in electron thus shielding decreased and atomic size also decreased.

3 0
3 years ago
Water will boil at 50°C if the pressure on the<br> surface of the water is
Pachacha [2.7K]

Water boils when its vapor pressure equals the prevailing atmospheric pressure over the water. In order for water to boil at 50 ºC, the pressure over the water would need to be reduced to a point greater equal to the vapor pressure of the water (92.5 torr).

8 0
3 years ago
How much will a student earns in 19 weeks if she works for 5 hours each week at a rate of $7 / hour?
koban [17]

Answer:

665

Explanatio

8 0
3 years ago
Read 2 more answers
When a substance dissolves, it undergoes a _____.
babunello [35]
A physical change.  chemical changes require the molecule itself to change.  If you put NaCl into solution, the NaCl is still there which is evident by the fact that if you lower the amount of water, NaCl precipitates out.
7 0
3 years ago
Read 2 more answers
. If 69.15% exists as 63Cu with an atomic mass of 62.92, then what is the atomic mass of the second isotope?
Alexeev081 [22]

Answer: 64.8

Explanation:Please see attachment for explanation

8 0
3 years ago
Other questions:
  • Which of the following statements is most accurate?
    8·1 answer
  • Which question must be answered to complete the table below?
    7·1 answer
  • What is the correlation between pressure and elevation for an ideal gas?
    9·1 answer
  • Which organelle below is the "brain" or control center for a cell?
    5·2 answers
  • Combustion analysis of toluene, a common organic solvent, gives 7.03 mgmg of CO2 and 1.64 mgmg of H2O. If the compound contains
    9·1 answer
  • What is flammability?
    12·2 answers
  • What is a barometer?
    5·2 answers
  • Mass defect is associated with:
    13·1 answer
  • At a given temperature, Kc=1.3x10-2 for reaction 1. What is the value of Kc for reaction 2? Reaction 1: begin mathsize 12px styl
    8·1 answer
  • Which type of electromagnetic wave has the greatest frequency?(1 point)
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!