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
raketka [301]
3 years ago
10

Calculate the molality of isoborneol in the product if, a) the melting point of pure camphor is 179°C and the melting point take

n from your sample is 165°C and b) the freezing point depression constant for camphor is 40°C kg/mol.
Chemistry
1 answer:
tresset_1 [31]3 years ago
8 0

Answer:

The molality of isoborneol in camphor is 0.53 mol/kg.

Explanation:

Melting point of pure camphor= T =179°C

Melting point of sample = T_f = 165°C

Depression in freezing point = \Delta T_f=?

\Delta T_f=T- T_f=179^oC-165^oC=14^oC

Depression in freezing point  is also given by formula:

\Delta T_f=i\times K_f\times m

K_f = The freezing point depression constant

m = molality of the sample

i = van't Hoff factor

We have: K_f = 40°C kg/mol

i = 1 (  organic compounds)

\Delta T_f=14^oC

14^oC=1\times 40^oC kg/mol\times m

m=\frac{14^oC}{1\times 40^oC kg/mol}=0.35 mol/kg

The molality of isoborneol in camphor is 0.53 mol/kg.

You might be interested in
3) 2500 pounds to Kilograms<br><br> Would this be 1,250?
Softa [21]

Answer:

1134

Explanation:

(the ones place was rounded up). 1133.981 is the unrounded answer.

8 0
3 years ago
Explain the electrolysis of acidified water​
Andrew [12]

Answer:

yqaeh

Explanation:

Electrolysis of acidified water

Water is a poor conductor of electricity, but it does contain some hydrogen ions , H +, and hydroxide ions, OH -. These ions are formed when a small proportion of water molecules naturally dissociate . ... H + ions are attracted to the cathode , gain electrons and form hydrogen gas.

8 0
2 years ago
Which will change will cause the gravitational force between a baseball and a soccerball
Vladimir79 [104]
Baseball has more chances




Pls mark as brainliest
4 0
3 years ago
1. What processes change sediments into a sedimentary rock?
Vanyuwa [196]
For sediments to become a sedimentary rock, it usually undergoes burial, compaction, and cementation. (Hope that helps)
6 0
3 years ago
He atomic number of carbon is 6. carbon-14 is heavier than carbon-12 because the atomic nucleus of carbon-14 contains _____ neut
Marta_Voda [28]
14-6=8
8 neutrons is the answer
5 0
3 years ago
Other questions:
  • Methylhydrazine, CH6N2, is commonly used as a liquid rocket fuel. The heat of combustion of methylhydrazine is −1.30 × 103 kJ/mo
    9·1 answer
  • Which three quantum numbers are associated with the 4d orbital?
    5·1 answer
  • What is the molarity of a solution that contains 1000.0 mg of AgNO3 that has been dissolved in 500 mL of water
    5·1 answer
  • 3.0 cm x 4.0 cm x 1.0 cm<br><br>[?]cm^3​
    8·1 answer
  • An element has atomic number 10 and an atomic mass of 20. How many neutrons are in the atom of this element?
    7·1 answer
  • Chlorophyll a is one of the green pigments found in plants. Chlorophyll a has the molecular formula C55H72MgN4O5. How many atoms
    12·1 answer
  • Which of the following will produce a 2 molar solution of copper (II) chloride?
    6·1 answer
  • dinitrogen pentoxide decomposes to form nitrogen dioxide oxygen, following the equation 2N2O5 -&gt; 4NO2. at a certain time poin
    6·2 answers
  • el magnesio (z=12) tiene tres isotopos 24mg, 25mg, 26mg. calcula la masa atómica promedio del magnesio
    8·1 answer
  • Explain the difference between weathering and erosion.
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!