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
just olya [345]
3 years ago
11

A sample of water at 20 degrees c contains what bonds

Chemistry
1 answer:
vladimir2022 [97]3 years ago
3 0
Covalent and hydrogen bonds

You might be interested in
Which reason best explains why metals are shiny?
alexgriva [62]
Reflection, refracting, and the energy levels of molecular orbitals
8 0
3 years ago
Plot your values of ln(Ksp) vs. 1/T and find the slope and y-intercept of the best fit line. Use the equation for the best fit l
labwork [276]

Answer:

a) The slope of the line of best fit plot = -12629.507

b) ΔH∘ = 105 kJ

c) Intercept of the line of best fit plot = 39.099

d) ΔS∘ = 325.1 J/K

e) Option A is correct.

Solubility will increase as temperature increases, because as T increases the (−ΔH∘/RT) term becomes smaller therefore K will get larger.

f) Option D is correct. All of the options are correct.

Explanation:

The complete question is presented in the first attached image to this question. This complete question has the data readings required to plot the graph.

The second attached image has the plotted graph and the regression analysis to obtain the line of best fit.

The equation of the line of best fit obtained is

y = -12629.507x + 39.099

Comparing the given expression for the question with the equation of a straight line

ln (K) = (−ΔH∘/RT) + (ΔS∘/R)

y = mx + c

y = In K

Slope = m = (−ΔH∘/R)

x = (1/T)

Intercept = c = (ΔS∘/R)

So, to answer the question now

a) The slope of the line of best fit plot = -12629.507

b) Slope = (−ΔH∘/R)

(−ΔH∘/R) = -12629.507

But R = molar gas constant = 8.314 J/mol.K

ΔH∘ = 12629.507 × 8.314 = 105,001.721198 J = 105,002 J = 105 kJ

c) Intercept of the line of best fit plot = 39.099

d) Intercept = (ΔS∘/R)

(ΔS∘/R) = 39.099

ΔS∘ = 39.099 × 8.314 = 325.069086 J/K = 325.1 J/K

e) Do you expect the solubility of Borax to increase or decrease as temperature increases?

Solubility will increase as temperature increases, because as T increases the (−ΔH∘/RT) term becomes smaller therefore K will get larger.

f) Why was it necessary to make sure that some solid was present in the main solution before taking the samples to measure Ksp? Select the option that best explains why.

A. To make sure no more sodium borate would dissolve in solution.

B. To ensure the dissolution process was at equilibrium.

C. To make sure the solution was saturated with sodium and borate ions.

D. All of the above

Hope this Helps!!!

5 0
3 years ago
The bear population in a national forest was monitored for ten years. The collected data for two winter months can be seen in th
antoniya [11.8K]

Answer:

C. is the answer i did the test and it was right.

5 0
3 years ago
Which ones are right to this question?
Vitek1552 [10]

The average Kenectic energy

7 0
3 years ago
Identify this reaction
Natasha2012 [34]

Answer:

d a a

Explanation:

brainliest plz

4 0
2 years ago
Other questions:
  • The maximum number of energy sublevels found in any energy level at ground state is:
    13·2 answers
  • Which one of these statements about carbon tetrachloride fire extinguishers is true?
    11·1 answer
  • How many liters of fluorine gas, at standard temperature and pressure, will react with 23.5 grams of potassium metal?
    13·1 answer
  • Can anybody help me? What is Oxidation? I used google but it didn't give me a good answer...
    6·1 answer
  • How are groundwater and surface water related?
    12·2 answers
  • You need 150g of pure lithium for an experiment you're doing. You have 675g of lithium oxide (Li2O). Can you extract all the lit
    14·1 answer
  • I need help pleaseee
    14·1 answer
  • What information does a complete ionic equation give that the balanced equation doesn't show?
    6·1 answer
  • If the following arithmetic operations are carried out, how many significant figures should be reported in the answer?32 + 0.56
    6·1 answer
  • A student delivered 17.06 mL (V1) of 7.16 % stock solution (M1) using a graduated pipette into a 50.00 mL (V2) volumetric flask.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!