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
lbvjy [14]
2 years ago
8

When a 6.00 g sample of KSCN is dissolved in water in a calorimeter that has a total heat capacity of 5.34 kJ⋅K−1, the temperatu

re decreases by 0.280 K. Calculate the molar heat of solution of KSCN.
Chemistry
1 answer:
Jet001 [13]2 years ago
6 0

The amount of energy that must be supplied in the form of heat to 1 mole of substance to raise the temperature by 1 unit is <u> </u><u>-26.805kJ/mol.</u>

<u> Solution:</u>

= 5.34 kJ/K * 0.31 K

= 1.655 joules kJ

mol of KSCN = mass/MW = 6.00/97.181

mol of KSCN = 0.0617404

= -Qsolutoin/mol = -1.655 /0.0617404 = -26.805kJ/mol.

Molar heat capacity is the amount of energy required to raise the temperature of one mole of a substance by one degree. to find the molar heat capacity of a compound or element, simply multiply the specific heat by the molar mass. The molar heat of the solution is the total energy change when a substance dissolves. KJ/MOL Measured in kilojoules/mole. Molar heat capacity is the amount of heat required to heat 1 mole of a substance to 1 Kelvin.

Learn more about Molar heat here:-brainly.com/question/15080895

#SPJ1

You might be interested in
What is the density of a 12-gram sample of zinc with volume of 8.4 cm3? <br><br> pls hurry pls
Sindrei [870]

AnswerIm telling your teacher "Ms.Byrd" your in 8th grade and go to berry middle?

Explanation:

8 0
3 years ago
PLEASE HELP ME I BEG YOU
VladimirAG [237]

The average kinetic energy of 1 mole of a gas at -32 degrees Celsius is:
 
3.80 x 103 J

The relationship between volume and temperature of a gas, when pressure and moles of a gas are held constant, is: V*T = k.

FALSE

The relationship between moles and volume, when pressure and temperature of a gas are held constant, is: V/n = k. We could say then, that:
If the moles of gas are tripled, the volume must also triple.


 If the temperature and volume of a gas are held constant, an increase in pressure would most likely be caused by an increase in the number of moles of gas.

TRUE

If the vapor pressure of a liquid is less than the atmospheric pressure, the liquid will not boil.

TRUE


35 - AB

36 -  BD

33 - true

34 - False

20 - 6

21 - orthohombic


4 0
3 years ago
Determine whether the disruption of the bonds or attractions occurs during protein hydrolysis or protein denaturation.
Aleonysh [2.5K]

Answer:

The disruption of the bonds or attractions occurs during protein hydrolysis which results in the loss for the primacy structure. The peptide bonds is the bond affected in this scenario.

The disruption of the bonds however only exist in the process of denaturation and this results in a change in the confirmation which could be secondary, tertiary, and quaternary structural related. And example of the bonds affected include salt bridges, disulfide bridges, hydrogen bonds etc.

5 0
3 years ago
Which headings should be used to complete this table?
ch4aika [34]

Answer:functional group (top row); sources in nature (bottom row)

Explanation:

6 0
3 years ago
Read 2 more answers
Which of these describes an ethical dilemma that drug designers could face?
LenKa [72]

The statement 'whether people should take medicine or if they should seek alternative treatments' describes an ethical dilemma that drug designers face.

<h3>What is drug development?</h3>

Drug development refers to all the processes from target drug identification to drug validation and commercialization.

Drug development involves different stages of development including preclinical and clinical trials.

Ethical dilemmas in drug development include the release of a drug that is ineffective when compared to parallel treatments.

Learn more about drug development here:

brainly.com/question/8187660

4 0
2 years ago
Other questions:
  • What are the uses of zinc
    12·2 answers
  • 4. Imagine you have a radioactive sample containing both Virtualium and decayed atoms of Virtualium. After analysis, you find it
    14·1 answer
  • The Resource Conservation and Recovery Act controls hazardous waste from its creation to its disposal. Please select the best an
    13·2 answers
  • Which of the following are observations? The candle floats. The tires are flat. The dog is barking. The tire is flat because of
    7·2 answers
  • Epsom salts is a hydrated ionic compound with the following formula: MgSO4⋅x H2O. A 4.93-g sample of Epsom salts is heated to dr
    8·1 answer
  • Explain the difference between wavelength and frequency
    7·1 answer
  • Can someone please help it is due tonight!
    5·2 answers
  • Calcium + nitrous acid → calcium nitrite<br> +<br> nitrogen monoxide<br> + water
    6·1 answer
  • When 5ml of HCl was added
    8·1 answer
  • What is the maximum number of electrons in the following energy level?<br> n = 4
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!