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
maria [59]
3 years ago
10

How many kilojoules of heat are released when 32.0 g of NaOH are dissolved in water? (The molar heat of solution of NaOH is –445

.1 kJ/mol.)
Chemistry
2 answers:
Katen [24]3 years ago
6 0
The energy release when dissolving 1 mol of NaOH in water is 445.1 kJ
the mass of NaOH to be dissolved is 32.0 g
The number of NaOH moles in 32.0 g - 32.0 g / 40 g/mol =  0.8 mol
the energy released whilst dissolving 1 mol of NaOH - 445.1 kJ
when dissolving 0.8 mol - the energy released is 445.1 kJ/mol x 0.8 mol
therefore heat released is - 356.08 kJ
answer is -356.08 kJ
alisha [4.7K]3 years ago
4 0

The correct answer is -356 kJ

You might be interested in
In terms of energy what kind of system is a sealed glass terrarium on a windsill?
Snezhnost [94]
If the sealed glass is permeable to sunlight or to transfer of heat will be an open system, but if the sealed glass is a thermic glass and doesn't allow exchange of heat and exchange of solar energy (for example a mirrored glass that reflect the sunlight) and the terrarium is not exchanging energy with the surroundings will be a closed system. It is a question that doesn't specify too many details about the system in the study. It is hard to give a final answer without making some assumptions.
6 0
3 years ago
Read 2 more answers
________________ is 'The movement of a liquid up a narrow tube due to adhesive affects.'
jolli1 [7]

Answer: capillary action

Explanation: it occurs when the adhesion forces (attraction between two surfaces or substances) in the liquid are stronger than the cohesion forces (attraction between the same molecule)

7 0
3 years ago
Thomas thinks that acceleration means “speeding up.” Explain why this is incorrect.
klemol [59]

Answer:

Explanation:

Thomas is incorrect because acceleration is a vector quantity that is defined as the rate at which an object changes its velocity. An object is accelerating if it is changing its velocity.

4 0
3 years ago
Read 2 more answers
What is the ph value of the produced solution when hcl reacts with naoh ?
algol13

Answer:

The answer to your question is: 7

Explanation:

The reaction between HCl and NaOH is a neutralization reaction, that means that the products will be water and a salt and the pH will be 7.

                     HCl + NaOH  ⇒  NaCl + H₂O

4 0
3 years ago
Someone help it’s due today
Kitty [74]

Answer:

All elements are neutral

Explanation:

The plum pudding model of the atom indicated that all elements are neutral. The model was proposed by J.J Thomson after he conducted his experiment on the gas discharge tube.

From the experiment he discovered electrons which he called cathode rays.

Therefore, he suggested the plum pudding model of the atom.

The model describes negatively charge sphere surrounded by positive charges to balance them.

6 0
3 years ago
Other questions:
  • Sulfuric acid was once produced through the reaction of sulfur trioxide with water. Sulfur trioxide can form through the reactio
    7·2 answers
  • Which of the following is a strong base?<br><br> A. NH3<br> B.HCO3<br> C. NaOH<br> D. HCOOH
    9·1 answer
  • A solution of salt water is boiled. The water evaporates and solid salt remains. Which statement is true?
    13·2 answers
  • What is the molecular formula for chloroform? none of these choices CH3C CHCI3 CH2C12 CCI4
    8·1 answer
  • Predict the reactants of this chemical reaction. That is, fill in the left side of the chemical equation. Be sure the equation y
    6·2 answers
  • ______________ forces are between different ATOMS of the SAME molecule. ______________ forces are between different MOLECULES of
    15·2 answers
  • A solution of 0.0027 M K2CrO4 was diluted from 3.00 mL to 100. mL. What is the molarity of the new solution?
    13·1 answer
  • In the figure, which two lines appear to be parallel?
    7·2 answers
  • HELP ASAP !!!!!
    7·1 answer
  • you have a reservoir held at a constant temperature of –30°c. you add 400 j of heat to the reservoir. if you have another reserv
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!