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
telo118 [61]
3 years ago
11

A solution is made by dissolving 3.8 moles of sodium chloride (NaCl) in 185 grams of water. If the molal boiling point constant

for water (Kb) is 0.51 °C/m, what would be the boiling point of this solution? Show all of the work needed to solve this problem.
Chemistry
1 answer:
IceJOKER [234]3 years ago
7 0
The boiling point of the solution can be calculated by the equation of the colligative property named boilng point elevation.

The formula for the boiling point elevation is:

ΔTb = i * Kb * m

Where:

i = van't Hoof factor
Kb = molal boiling point constant
m = molality.

Solution:

1) i is 2 because the NaCl is ionice and dissociates into two ions.

2) Kb is given = 0.51 °C/m

3) m = moles of solute / kg of solvent

moles of solute is given = 3.8

kg of solvent = 185 g * 1 kg/1000g = 0.185 kg

m = 3.8 moles / 0.185 kg = 20.54 m

4) ΔTb = 2 * 0.51°C/m * 20.54m = 20.9 °C

5) The boiling point is the normal boiling point of water (100°C) plus the increase:

Tb = 100°C + 20.9°C = 120.9°C

Answer: 120.9°C.

You might be interested in
Which of the following sequences describe how a four stoke engine cycle powers the engine
Vera_Pavlovna [14]

A four cycle engine works with 4 basic steps to a successful rotation of the crankshaft: the intake, compression, power and exhaust stroke. Each engine cylinder has four openings for the intake, exhaust, spark plug and fuel injection. ... The compression makes the air-fuel combination volatile for easier ignition.

8 0
3 years ago
Who can tell me the half reaction about cucumber battery
xeze [42]
I've prepared some analysis and <span>cucumbers do have many comparable properties to potatoes, tomatoes, and lemons, all of which I know do work. So I would presume that cucumbers would also work. I would recommend trying it yourself to perceive. I'd love to hear the outcomes of your experiment. ;) </span>
6 0
2 years ago
The progress of the reaction:
Blababa [14]

Answer:

The Equilibrium constant K is far greater than 1; K>>1

Explanation:

The equilibrium constant, K, for any given reaction at equilibrium, is defined as the ratio of the concentration of the products raised to their stoichiometric coefficients divided by the concentration of reactants raised to their stoichiometric coefficients.

It tells us more about how how bigger or smaller the concentration of products is to that of the reactants when a reaction attains equilibrium. From the given data, as the color of the reactant mixture (Br2 is reddish-brown, and H2 is colourless) fades, more of the colorless product (HBr is colorless) is being formed as the reaction approaches equilibrium. This indicates yhat the concentration of products becomes relatively higher than that of the reactants as the reaction progresses towards equilibrium, the equilibrium constant K, must be greater than 1 therefore.

6 0
3 years ago
A change in matter that produces one or more new substances is a(n)
lukranit [14]

You could use another word for change can be variable witch means change and if you times the one two more times then you would get four because two time two would be four and times the one would be four.


6 0
3 years ago
What is the maximum number of p orbitals in any single energy level in an atom?
nordsb [41]
Answer is 3
s -1
p - 3
d - 5
f - 7
7 0
3 years ago
Other questions:
  • It takes 338. kJ/mom to break a carbon-chlorine single bond. Calculate the maximum wavelength of light for which a carbon-chlori
    15·1 answer
  • In this Punnett square, what is the probability of the offspring being a heterozygous purple flower
    9·1 answer
  • Limestone is used to make cement and mortar. <br> a. True <br> b. False
    15·1 answer
  • How many valance Elton’s does aluminum have
    11·2 answers
  • Can somebody answer this question for me it might be easy for you answer part 1,2,and 3
    9·2 answers
  • 59x<br> 56x<br> 35<br> 35<br> What do they have in common
    13·2 answers
  • Sodium bicarbonate =sodium carbonate + water + carbon dioxide gas
    5·1 answer
  • How many Joules are there in 3301 calories? (1 cal = 4.18 J)
    10·2 answers
  • 1010L
    6·1 answer
  • Pleaseee helppp!!!!!
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!