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
Lisa [10]
3 years ago
15

Calculate the molar enthalpy change of H2O (l) when liquid water is heated from 41.7 C to 76.2 C

Chemistry
1 answer:
yulyashka [42]3 years ago
7 0
Enthalpy change is the total heat that is absorbed or evolved in a certain reaction that is being carried in a constant pressure system. It can be calculated by the product of the specific heat of the substance ad the difference of the final temperature and the initial temperature. Molar enthalpy change is the heat evolved or absorbed per 1 mole of a substance.The specific heat of water is 4.18 J per gram of water per degree Celsius. We calculate as follows:

Molar enthalpy change = 4.18 J / g - C ( 76.2 C - 41.7 C ) ( 18.02 g / mol ) = 2598.6642 J or 2.6 kJ
You might be interested in
What element is Column 1, period 3
Finger [1]

Answer:

Sodium (Na)

Explanation:

The element on the periodic table at Column (group) 1, period 3 is Sodium (Na)

3 0
3 years ago
What examples does<br> - Making Materials<br> - Moving Materials<br> - Removing Waste
Sidana [21]

Answer:

You remove waste as a gas (carbon dioxide), as a liquid (urine and sweat), and as a solid. Excretion is the process of removing wastes and excess water from the body. Recall that carbon dioxide travels through the blood and is transferred to the lungs where it is exhaled

Moving Materials include aluminum foil tape, shipping tape, box tape and duct tape. Moving labels take the guesswork out of the moving process.

7 0
3 years ago
What happens if the metal you throw in is MORE REACTIVE than the<br> metal ion in solution?
IRISSAK [1]
A displacement reaction Would occur in this situation
6 0
3 years ago
How do dominant and recessive traits impact genotype and phenotype?
beks73 [17]
The phenotype depends on the dominant allele. Only people with aa genotype will express recessive traits. Hope this helped!
7 0
3 years ago
What type of sugar has the largest surface area
Valentin [98]

Answer:

d.) granulated

Because the granulated sugar has a greater surface area.

7 0
3 years ago
Other questions:
  • How do you describe how sugar dissolves in tea using the big idea of particles?
    15·2 answers
  • Dr. Ray has developed a new way to remove oil from wetlands in the event of an oil spill. To test his new process, Dr. Ray build
    8·2 answers
  • Phosphorus pentoxide (P4O10) is used as a dehydrating agent in many organic synthesis reactions. What type of bonding occurs bet
    13·1 answer
  • 6. The concentration of a solution is : a)The amount of solvent needed to fully dissolve a solute b)The measurement of how large
    15·1 answer
  • What factor can limit the buffering capacity of a molecule?
    15·1 answer
  • Three elements have the electron configurations 1s2 2s2 2p6 3s2 3p6, 1s2 2s2 2p6 3s2, and
    8·1 answer
  • What happened when citric acid and and bicarbonate soda mixed together
    14·1 answer
  • Describe how the metal probably increases the reaction rate, identify whether this is an example of homogeneous or heterogeneous
    5·1 answer
  • 3. Could a molecule<br> contain only one atom?
    11·1 answer
  • Formic acid, from the Latin formica, is the acid present in ants sting. What is the
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!