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
kompoz [17]
3 years ago
13

In a calorimetry experiment, a salt is dissolved in water within an insulating container. The temperature of the solution (surro

undings) decreases from 25°C to 14°C. Given that the mass of the solution is 120 g, and the specific heat of the solution is 3.18 J/g°C, calculate the enthalpy change (in kJ) for the dissolving process. Be sure to give the correct sign for your answer, and identify the dissolving process as endothermic or exothermic. Group of answer choices
Chemistry
1 answer:
Stels [109]3 years ago
7 0

Answer:

Explanation:

heat released  by the solution

= 120 x 3.18 x ( 25 - 14 )

= 4197.6 J

= 4.1976 kJ

This is the heat gain by the salt

so enthalpy change = +  4.1976 kJ

because there is increase  in enthalpy

It is endothermic process .

You might be interested in
What charge would Balloon #2 have? How did you determine this?
tigry1 [53]

Answer:I belive it would be attracted seeing as how there are more magmatic charges on that side of no 2 and how there are more positive charges on the middle side of ballon no1.

Explanation:

4 0
3 years ago
Can atoms combine in different ways to make up all of the substances you encouter every day
qaws [65]
Majority can such as hydrogen H and oxygen O forming water H2O but uranium having extra neutrons to form plutonium and beyond simply can't because it will not last for a fraction of a second or spiral out of control and violently react like the little boy and the fat man (a uranium and plutonium nuclear weapon) so yes and no
8 0
3 years ago
In a double-blind test, the non-control group receives a
Aleksandr [31]

Answer:

Hi There! I'm new so I hope I get This Right! ^^

Explanation:

double blind test. the control group receives a placebo. Why is a placebo used in a double-blind test? so that the effects on people in two different groups can be compared.

happy To Help! ^^

6 0
3 years ago
Which og the following best describe your lungs?
jarptica [38.1K]

ambot unsa ang answr kay kamo ra naka sabot

6 0
3 years ago
For any point on earths surface its height above sea level is called its
DedPeter [7]
Altitude, If this helped please 5 star me 
6 0
3 years ago
Read 2 more answers
Other questions:
  • 1.....What are the 2 major divisions of Biochemistry?
    14·1 answer
  • A theater director reinterprets a play by replacing its classical score with
    10·2 answers
  • Define Intermolecular forces
    15·2 answers
  • The potential difference across the terminals of a battery of e.m.f. 12 V and internal resistance 2 ohm drops to 10 V when it is
    6·1 answer
  • Please help answer this Guy's​ HELP it's very Important
    12·1 answer
  • A 500.0 mL sample of 0.18 MHClO4 is titrated with 0.27 MCsOH. Determine the pH of the solution after the addition of 250.0 mL of
    8·1 answer
  • Give 2 Examples of gasses
    12·1 answer
  • Air is a solution of gases, what is the solvent in air?
    5·1 answer
  • Use the image to answer the question.
    5·2 answers
  • What is the enthalpy of combustion when 1 mol C6H6(g) completely reacts with oxygen? 2C6H6(g) 15O2(g) mc001-1. Jpg 12CO2(g) 6H2O
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!