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
Citrus2011 [14]
3 years ago
8

Which statement describes a property of covalent compounds?

Chemistry
2 answers:
Maksim231197 [3]3 years ago
5 0
They have a low boiling point because of weak intermolecular forces.
DIA [1.3K]3 years ago
4 0
B) They have a low boiling point because of the weak <span>intermolecular </span>forces.

Hope this helped!
You might be interested in
4 Which pair of ions is isoelectronic?
Softa [21]

Answer:

B. Na+ and O2-

Explanation:

Na+ plus has 10 electrons and O2- also has 10 electrons

7 0
2 years ago
Convert 850 mm Hg to kPa. *
Feliz [49]

Answer:

113.324 KPA

Explanation:

4 0
3 years ago
Which of the following has the strongest buffering capacity? A. H2O B. 0.1 M HCl C. 0.1 M carbonic/bicarbonate (H2CO3/HCO3-) at
enyata [817]

Explanation:

(A)   As we know that carbonic acid (H_{2}CO_{3}) and Sodium bicarbonate (NaHCO_{3}) forms an acidic buffer.

Therefore, pH of an acidic buffer is given by Hendeerson-Hasselbalch equation as follows.

               pH = pK_{a} + log(\frac{[Salt]}{[Acid]}) ........... (1)

So mathematically,  if [Salt] = [Acid]  then \frac{[Salt]}{[Acid]} = 1 .

And,  log (\frac{[Salt]}{[Acid]}) = 0

Therefore, equation (1) gives us the following.

         pH = pK_{a} (when acid and salt are equal in concentration)

Hence, pK_{a} of H_{2}CO_{3} (carbonic acid) is 6.35.

And, with this we have following results.

In (A) and (D) we have the case \frac{[NaHCO_{3}]}{[H_{2}CO_{3}]}[/tex] i.e. [Salt] = [Acid].

Hence, for the cases pH = pK_{a} = 6.35.

(B)    [NaHCO_{3}] = 0.045 M and,  [H_{2}CO_{3}] = 0.45 M

Hence,   pH = 6.35 + log([NaHCO_{3}][[H_{2}CO_{3}])

                     = 6.35 + log(\frac{0.045}{0.45})

                     = 6.35 + (-1)

                     = 5.35

Therefore, it means that this buffer will be most suitable buffer as it has pH on acidic side and addition of slight excess base will not affect much of its pH value.

(C)    [NaHCO_{3}] = 0.45 M [H_{2}CO_{3}]

                          = 0.045 M

So,       pH = 6.35 + log(\frac{[NaHCO_{3}]}{[H_{2}CO_{3}]})

                  = 6.35 + log(\frac{0.45}{0.045})

                  = 6.35 + (+1)

                 = 7.35

This means that pH on Basic side makes it no more acidic buffer.

5 0
3 years ago
The diagram below shows part of the rock cycle.
snow_lady [41]
The answer is igneous
5 0
3 years ago
Read 2 more answers
16g of O2
cricket20 [7]

they are listed in order of decreasing number of moles

6 0
3 years ago
Read 2 more answers
Other questions:
  • The number 4012 has how many significant figures?​
    5·1 answer
  • Where is desertification likely to occur?
    14·2 answers
  • If a solution is saturated, which of these is true?
    12·2 answers
  • Which occurs during summer in the Northern Hemisphere? A. The earth is closer to the sun. B. The earth's axis is tilted so that
    14·1 answer
  • Number 14? Please :)
    10·1 answer
  • 0.0055 in scientific notation
    13·2 answers
  • In each of the following sets of elements, which one will be least likely to gain or lose electrons?
    5·1 answer
  • imagine that a classmate is quizzing you on the structure of an unknown element. all she can tell you is what the atomic mass is
    10·1 answer
  • Help me pleaseeeeeeeee
    7·2 answers
  • Hi how are you guys doing today???
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!