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]
3 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]3 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
Mara and ivy are asked to identify two minerals in science class. To do this, they decided to study the physical properties of t
scZoUnD [109]

Answer:

2 only is a pretty accurate answer the others dont make sense  to me.

Explanation:

8 0
3 years ago
Read 2 more answers
What chemical process occurs in cells to release energy?
Lana71 [14]

Answer:

B. Respiration

Explanation:

cellular respiration is the process where cells use glucose (C6H12O6) and oxygen gas (O2) to make carbon dioxide (CO2) water (H2O) and ATP, which is energy

formula:

C6H12O6 + 6O2 -> 6CO2 + 6H20 + 38ATP  

3 0
2 years ago
What is the mass of a block with a volume of 18 cm^3, and a density of 9.2 g/cm^3?
Semmy [17]

Answer: 165.6grams

Explanation:

Mass of a block = ?

Volume of block = 18 cm^3

Density of block = 9.2 g/cm^3

The density of any object depends on its mass and volume.

i.e Density of block = Mass / volume

9.2 g/cm^3 = Mass / 18 cm^3

Mass = 9.2 g/cm^3 x 18 cm^3

= 165.6 g

Thus, the mass of the block is 165.6grams

6 0
3 years ago
A) Two ways to create a positive ion:
nirvana33 [79]

Positive ions are formed by atoms or molecules suffering an inelastic collision with an energetic electron in which an electron is lost from the atom or molecule (electron impact ionization). The degree of ionization of the plasma depends strongly on the electron density and energy distribution in the gas.

3 0
3 years ago
Read 2 more answers
What are the uses of crude oil?
vampirchik [111]

Answer:

they are use to make  tar, asphalt, paraffin wax, and lubricating oils.

Explanation:

7 0
3 years ago
Other questions:
  • The concentration of sugar in a soft drink is measured to be 10.5%. how many grams of sugar are in 125 g of the drink?
    7·1 answer
  • Using a skeletal structure, give the structure corresponding to the name (s)−3−iodo−2−methylnonane.
    10·1 answer
  • The amount of gas that occupies 36.52 L at 68.0°C and 672 mm Hg is __________ mol.
    8·1 answer
  • . What is the density of a block of plastic if the volume of the block is 5 cm and the mass is 17.2 g?
    6·1 answer
  • A sample of Strontium-90 is found to have decayed to one-fourth of its original amount after 58.2 years. What is the half-life o
    8·2 answers
  • Magnesium is added to dilute hydrochloric acid. This makes bubbles of hydrogen and a colorless solution of magnesium chloride. W
    9·2 answers
  • What is the periodic table element for Iron?
    6·2 answers
  • If some salt were accidently spilled as it was transferred from the balance to the cup would your calculated enthalpy of solutio
    14·1 answer
  • Photosynthesis is an example of an __<br> process.
    9·1 answer
  • Cannot be chemically broken down into simpler substances
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!