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
Kitty [74]
3 years ago
14

7. How many Joules of heat energy are absorbed in

Chemistry
1 answer:
Anettt [7]3 years ago
3 0
<h3>Answer:</h3>

C) 6.3 x 10^2 Joules

<h3>Explanation:</h3>

We are given;

  • Mass of water as 10 g
  • Initial temperature of water is 5.0°C
  • Final temperature of water is 20°C
  • Therefore, Change in temperature, ΔT is 15°C

We are required to calculate the amount of heat energy absorbed..

  • Quantity of heat absorbed is calculated by multiplying mass of water with the specific heat capacity by change in temperature.
  • That is; Q = mcΔT

Specific heat capacity of water, c is 4.184 J/g°C

Therefore;

Q = 10 g ×  4.184 J/g°C × 15°C

   = 627.6 Joules

   = 6.3 × 10^2 Joules

Thus, the heat energy absorbed is 6.3 × 10^2 Joules

You might be interested in
A manufacturing plan has been found guilty of polluting the nearby river. this is pollution
solniwko [45]
Yes it is polluting the river with everything the manufaturing plant gives off such as the chemicals released in the air
6 0
3 years ago
Identify and describe 2 changes of state that release energy
soldier1979 [14.2K]

Answer: All changes of state involve the transfer or energy

Explanation: i got my information from this site

https://www.esrl.noaa.gov/gmd/education/info_activities/pdfs/CTA_the_water_cycle.pdf

4 0
4 years ago
Which material is likely to slow the flow of electric charges the most? Explain
vesna_86 [32]

Answer:

The material that would most likely slow the flow of electricity is plastic.

Explanation:

Plastic is a conductor. A conductor is something that stop or slows down the flow of electricity.

4 0
3 years ago
Calculate the energy(J) change associated with an electron transition from n=2 to n=5 in a Bohr hydrogen atom. Put answer in sci
Oliga [24]
The energy at n level of hydrogen atom energy level =13.6/n^2

substiture the respective n values in the equation above and find the difference in the energy levels

instagram : imrajsingh

gimme a follow^ :)
3 0
3 years ago
Read 2 more answers
Una muestra de 1 gramo de un elemento contiene 1,5 x 1022 atomos, cual es su masa molar❓❓
marusya05 [52]

El número de Avogadro es 6,022 x 10^23, y es el número de átomos que hay en un mol de dicho elemento. A su vez un mol es la cantidad de un elemento cuya masa en gramos coincide con el peso atómico.

Por tanto, 6,022 x 10^23 átomos del elemento tienen una masa en gramos igual a su peso atómico. Hacemos una regla de tres:


1 gramo -------- 1,5 x 10^22 átomos

x ------------------ 6,022 x 10^23 átomos


=> x = 40,1 gramos por mol del elemento.


De modo que su peso atómico es 40,1. Se trata del calcio.


Saludos.

7 0
4 years ago
Other questions:
  • Can You compost salad
    14·1 answer
  • HELP ASAP AND ILL GIVE U BRAINLIEST
    13·1 answer
  • Name the compound re2o5. use a roman numeral after the name of the cation
    6·1 answer
  • Which of the following could you do to increase the strength of an electromagnet?
    13·1 answer
  • Select from the drop-down menu to correctly complete the statement.
    15·1 answer
  • Momentum is mass times<br><br> A. acceleration<br> B. velocity<br> C. distance
    11·1 answer
  • In 25 words or fewer, what do you think a scientist would want to explain about this soda?
    8·1 answer
  • A student dissolves of glucose in of a solvent with a density of . The student notices that the volume of the solvent does not c
    14·1 answer
  • put the contributions to the understanding of the atomic structure in order from most recent at the top to the earliest at the b
    13·1 answer
  • A hydrocarbon is a compound that contains mostly carbon and hydrogen. Calculate the percent composition (by mass) of the followi
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!