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
Mrrafil [7]
3 years ago
13

What is the freezing point (in degrees Celcius) of 4.14 kg of water if it contains 235.1 g of butanol, C 4 H 9 O H

Chemistry
1 answer:
Karolina [17]3 years ago
5 0

Answer:

Explanation:

Molal freezing point depression constant of butanol Kf = 8.37⁰C /m

ΔTf = Kf x m , m is no of moles of solute per kg of solvent .

mol weight of butanol = 70 g

235.1 g of butanol = 235.1 / 70 = 3.3585 moles

3.3585 moles of butanol dissolved in 4.14 kg of water .

ΔTf = 8.37 x 3.3585 / 4.14

= 6.79⁰C

Depression in freezing point = 6.79

freezing point of solution = - 6.79⁰C .

You might be interested in
What is the mass of 1 mole of magnesium (Mg)? Express your answer to four significant figures.
Kay [80]

Answer:

24.305 grams

Explanation:

6 0
3 years ago
Read 2 more answers
Calculation of Molar Ratios of Conjugate Base to Weak Acid from pH For a weak acid with a pKa of 6.0, calculate the ratio of con
Free_Kalibri [48]

Explanation:

According to the Handerson equation,  

          pH = pK_{a} + log \frac{\text{salt}}{\text{acid}}

or,      pH = pK_{a} + log \frac{\text{conjugate base}}{\text{acid}}

Putting the given values into the above equation as follows.

     pH = pK_{a} + log \frac{\text{conjugate base}}{\text{acid}}

       5.0 = 6.0 + log \frac{\text{conjugate base}}{\text{acid}}[/tex]

      log \frac{\text{conjugate base}}{\text{acid}} = -1.0

or,      \frac{\text{conjugate base}}{\text{acid}} = 10^{-1.0}

                            = 0.1

Therefore, we can conclude that molar ratios of conjugate base to weak acid for given solution is 0.1.

7 0
3 years ago
How much heat in joules in needed to raise the temperature of 257g of ethanol c of ethanol =2.4j/gC by 49.1?
strojnjashka [21]

Answer:

30284.88J

Explanation:

c=mCtetha

c=257×2.4×49.1

hope it helps

please like and Mark as brainliest

6 0
4 years ago
Are mountains physical or chemical property
Kipish [7]

Answer:

i did not understand your question.

i could help you if you tell me the proper question.

7 0
3 years ago
Read 2 more answers
How do a single, double, and triple covalent bonds form?
satela [25.4K]

Explanation:

Single covalent bonds

When an atom needs 1 electron to attain noble gas configuration they share rhe atoms in order to gain this ex ; H2 molecule

double covalent; O2 molecule

triple covalent; N2 molecule

6 0
3 years ago
Other questions:
  • Antacids are taken to counterbalance excess hydrochloric acid, HCl, in the stomach. Complete and balance the following neutraliz
    9·1 answer
  • What's the meaning of pH indicator?
    14·2 answers
  • Select the characteristics of a hydrogen bond:
    11·2 answers
  • Scientists can tell the average temperature of the earth by studying an ice core.<br> true or false
    11·2 answers
  • Is this a compound, element, or mixture????
    12·1 answer
  • For a reaction: aA → Products, [A]o -4.3 M, and the first two half-lives are 56 and 28 minutes, respectively. Calculate k (witho
    13·1 answer
  • What are the products of the neutralization reaction between HCl and
    14·1 answer
  • The molecular formula of a compound is C7H14O7. what is the empirical formula​
    11·1 answer
  • A gas with a vapor density greater than that of air, would be most effectively displaced out off a vessel by?
    7·1 answer
  • To answer this question, you may need access to the periodic table of elements.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!