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
Maru [420]
2 years ago
10

Lactose, C12H22O11, is a naturally occurring sugar found in mammalian milk. A 0.335 M solution of lactose in water has a density

of 1.0432 g/mL at 20 o C. What is the concentration of this solution in the following units?
i) mole fraction
ii) molality
iii) mass percent
Chemistry
1 answer:
Dmitry_Shevchenko [17]2 years ago
5 0

The molality of the solution is 0.00037 m.

<h3>What is concentration?</h3>

The term concentration refers to the amount of solute in a solution.

We have the following information;

Molarity = 0.335 M

Density =  1.0432 g/mL

Temperature = 20 o C

The molality of the solution is obtained from;

m = 0.335 M ×  1.0432 g/mL/ 1000(1.0432 g/mL) - 0.335 M (342 g/mol)

m = 0.344/1043.2 - 114.57

m =  0.344/928.63

m = 0.00037 m

Learn more about molality of solution: brainly.com/question/4580605

You might be interested in
I need help really bad.
masha68 [24]

Answer:

the answer is Ahope this helps you

7 0
2 years ago
Read 2 more answers
What was the ratio im the formula for the iron (ll) oxide
kkurt [141]

The Fe charge is 2+ and the O charge is 2- so the ratio is 1:1

FeO

4 0
3 years ago
Giving brainliest for best answer
Alina [70]

Answer:

C

Explanation:

8 0
3 years ago
Three test tubes contain white crystalline organic solids A, B, and C, each of which melts at 149-150 degrees C. A 50-50 mixture
Digiron [165]

Answer:

The mixture of B and C will melt as 130 - 139 ºC.

Explanation:

If the melting point (130 - 139 ºC) of a mixture of A and B is lower than the pure substances that is 149 - 150 ºC that means that one of these susbtances is an impurity because reduces the melting point.

If the melting point of the mixture of A and C is the same as the pure substances, we can deduce that they are the same substances, also because the melting point when a substance is pure is just 1 or 2 ºC like in this case.

So in a Mixture of B and C is going to be like the first case of the mixture among A and B, because the B substance is the impurity.

3 0
3 years ago
What is a substance?
love history [14]
The proper definition would be B. A mixture that can be separated.
4 0
2 years ago
Read 2 more answers
Other questions:
  • Sometimes reactions to prices in oligopolistic markets can result in _________
    6·1 answer
  • A screw has 4 threads per centimeter and a circumference of 2 centimeters. The mechanical advantage of the screw is?
    8·2 answers
  • What are atoms comprised of?
    5·1 answer
  • Which condensed structural formula represents an unsaturated compound?
    8·2 answers
  • Which piece of laboratory glassware did you find to be more efficient for the solvent extraction procedure, and why?
    5·1 answer
  • Why does the reaction H2O + Cu→no reaction not proceed to a product?
    15·2 answers
  • Flask is immersed in a large beaker of very hot water. At first, the level of the liquid in the tube falls, but after a short ti
    14·1 answer
  • How many mL of 8.00M HCl solution are needed to make a dilution with a final volume of 2,500.ml, and a
    10·1 answer
  • Suppose a 500.mL flask is filled with 0.40mol of N2 and 1.0mol of NO. The following reaction becomes possible:
    14·1 answer
  • II. Resuelve los siguientes ejercicios (consulta La tabla entalpias estándar de formación, que se encuentra en el apartado de do
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!