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
Gnesinka [82]
3 years ago
13

A calorimeter contains 280.0g of water at 13.5C. When 0.250g of a substance with a molar mass of 510.0g/mol is dissolved, the te

mperature of the resultant solution increases to 17.5C. Assume that the specific heat and density of the resulting solution are equal to those of water, 4.18J/gC and 1.00 g/mL, respectively and assume that no heat is lost to the calorimeter itself, nor to the surroundings. Calculate the amount of heat in Joules released by dissolving the substance.
Chemistry
1 answer:
marin [14]3 years ago
8 0

The change in heat is simply equal to:

change in heat ΔH = final enthalpy – initial enthalpy

ΔH = [280.25 g * 4.18J/gC * (17.5°C)] – [280 g * 4.18J/gC * 13.5°C]

ΔH = 4,699.89 J = 4.7 kJ

 

<span>Hence heat released is about 4.7 kJ</span>

You might be interested in
Vocabulary for Decanting
Aleksandr-060686 [28]

Answer:

Decant means "to pour." Kids moving water back and forth between two cups, your dad pouring a bucket of soapy water in the sink, or a wine expert emptying a bottle of wine into a fancy glass container — all of them are decanting liquids.

Explanation:

4 0
2 years ago
What are the substances making up a mixture called
dimulka [17.4K]

  • The substance that made up of a particular mixture can be regarded as Solute and solvent

  • A  mixture can be regarded as material which is made up of  more than one  different Chemical substance or substances , whereby they  are not chemically combined.

  • Substance could be any matter such as <em>salt, rice, and or compounds</em>

  • A mixture can be regarded as physical combination involving two or more substances whereby each entities identities are retained, then mixed in the form such as ;
  1. <em>solutions</em>
  2. <em> suspensions </em>
  3. <em> colloids</em>.

  • A mixture could be  in this form <em>(Solute + solvent = solution)</em>

Therefore, the substance that made up of a particular mixture can be regarded as <em>Solute and solvent</em>

Learn more at: brainly.com/question/18569341

7 0
3 years ago
20 points! Help please
Olin [163]

Answer: 2N2O3 -> 2N2 + 3O2

Explanation:

5 0
2 years ago
Read 2 more answers
What condition of the gas remains constant?
Alexeev081 [22]

Answer:

The temperature remains constant because the internal energy only depends on temperature in that case

-Hops

7 0
3 years ago
Sara is making an omelet. She cracks open 6 eggs and places them in a bowl. She adds some milk, salt, and pepper to the eggs and
Sunny_sXe [5.5K]

Answer:  Well then I guess Sara is having a good breakfast

Explanation: what was the point of this question?

6 0
3 years ago
Other questions:
  • What is the most reactive metal on the periodic table?
    7·1 answer
  • What soil particle size has the greatest oxygen holding capacity? What soil particle size has the greatest water holding capacit
    10·2 answers
  • 4. Quando se obtém a potência máxima da célula, o valor indicado no amperímetro, na unidade SI, está no intervalo: (A) [3,1; 3,2
    6·1 answer
  • Which one is the answer... a, b, or c?
    15·1 answer
  • A weather balloon filled with helium has a volume of 700 L at STP. To find the mass of helium which conversion factors would you
    6·1 answer
  • I need help with this ASAP PLEASE
    7·1 answer
  • What is the answer please tell me
    7·1 answer
  • Out of magnesium and Calcium which element is more reactive give reason​
    15·1 answer
  • The amount of thermal energy contained by a substance depends on 2 things
    10·1 answer
  • Identify how energy changed form so it could be use in each example.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!