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
valentinak56 [21]
3 years ago
10

What is the molality of a solution made by dissolving 15.20 g of i2 in 1.33 mol of diethyl ether, (ch3ch2)2o?

Chemistry
1 answer:
Paraphin [41]3 years ago
3 0
The  molarity   of solution  made  by  dissolving  15.20g  of i2  in 1.33 mol  of diethyl ether (CH3CH2)2O  is    =0.6M

   calculation

molarity  =moles of solute/  Kg of the  solvent

mole  of the solute  (i2)  =  mass /molar mass
the molar mass of i2 = 126.9 x2 = 253.8 g/mol

moles is therefore=  15.2 g/253.8 g/mol  =  0.06  moles


calculate the Kg of solvent  (CH3CH2)2O
mass =  moles  x  molar mass
molar mass  of  (CH3CH2)2O= 74 g/mol

mass  is therefore = 1.33 moles  x  74 g/mol =  98.42 grams
in Kg = 98.42 /1000 =0.09842  Kg

molarity  is therefore = 0.06/0.09842 = 0.6 M

You might be interested in
Which of the following reactions is spontaneous?
AveGali [126]
Answer is: <span>lumps os sugar dissolving in water.
Sugar has very good solubility in water and it dissolves readily, which is </span><span>example of a physical change.
</span>Gibbs free energy (G) determines if reaction will proceed spontaneously, if ΔG is negative, reaction is spontaneous <span>(ΔG = ΔH - T·ΔS).
</span>In other examples, reactions are spontaneous in reverse way, for example spontaneous is forming sodium chlorine from sodium metal and chlorine gas, but not sodium chloride forming sodium metal and chlorine gas, because a lot of energy is needed for that reaction.
5 0
3 years ago
3. Why are nutrients needed for living things? Describe the difference between living and nonliving things.
igor_vitrenko [27]
Nutrients are synthetic substances found in each living thing on Earth. They are important to the existences of individuals, plants, animals, and any remaining organisms. Nutrients assist break with bringing down food to give organisms energy. ... The main nutrients they need are carbon, hydrogen, and oxygen.
8 0
3 years ago
What describes the change in oxidation states of the following reaction
miskamm [114]
Cu  ions  reduced to  cu  and Al  oxidized to  Al  ions  is  the  answer.  copper   ions is right hand  side  of  the  E.M.F  cell  where  reduction  take  place  and is  reduced  to  copper  metal. Al   metal is  at left hand  side  of  the  E.m.f  cell where oxidation  take  place and  is  oxidized  to  Al  ions
7 0
3 years ago
In a pure metal, the electrons can be thought of as [ Select ] throughout the metal. Using molecular orbital theory, there [ Sel
Phoenix [80]

Answer:

Explanation:

In a pure metal, the electrons can be thought of as [concentrated] around atoms throughout the metal. Using molecular orbital theory, there [is ] an energy gap between the filled molecular orbitals and empty molecular orbitals. The [antibonding] orbitals are typically higher in energy and are mostly (filled]

5 0
3 years ago
Two groups complete an experiment requiring the mass measurement to be repeated three times in the experiment. Group I selects a
Irina18 [472]
Group 1 was more careful in choosing the person, whereas Group 2 might have been more careless. 
3 0
3 years ago
Other questions:
  • What's the difference between nahco3, khco3, na2co3, and k2co3?
    5·1 answer
  • In an electrically neutral atom of any element, there are equal numbers of
    7·2 answers
  • Why is the reaction of a strong acid and a strong base classified as a neutralization reaction?
    13·1 answer
  • Why NH4 is not a molecular ion
    10·1 answer
  • A balloon is filled to a volume of 5.10l at a temperature of 27.1ºc. if the pressure in the balloon is measured to be 2.20 atm,
    13·1 answer
  • Potassium sulfate and strontium acetate<br> Express your answer as a chemical equation
    5·1 answer
  • What happens to energy and temperature when molecules collide
    10·1 answer
  • Write the following numbers in scientific notation.
    9·1 answer
  • How many protons, neutrons, and electrons in Cl-?
    8·1 answer
  • 4. You have 4.0 x 10^24 particles of MgO. How many moles are present?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!