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
Bumek [7]
3 years ago
15

Calculate the heat change involved when 2.00 L of water is heated from 20.0/C to 99.7/C in

Chemistry
1 answer:
IgorC [24]3 years ago
7 0

Answer:

669.48 kJ

Explanation:

According to the question, we are required to determine the heat change involved.

We know that, heat change is given by the formula;

Heat change = Mass × change in temperature × Specific heat

In this case;

Change in temperature = Final temp - initial temp

                                       = 99.7°C - 20°C

                                       = 79.7° C

Mass of water is 2000 g ( 2000 mL × 1 g/mL)

Specific heat of water is 4.2 J/g°C

Therefore;

Heat change = 2000 g × 79.7 °C × 4.2 J/g°C

                      = 669,480 joules

But, 1 kJ = 1000 J

Therefore, heat change is 669.48 kJ

You might be interested in
What is the nuclear charge of a berrylium atom?
ICE Princess25 [194]

Answer:

The charge on the nucleus of an atom; controlled by the number of protons and electrons present in an atom.

Explanation:

4 0
3 years ago
Element: calcium symbol: Ca Atomic weight: g Mass of one mole: g/mol
Elena-2011 [213]

153g/mols I think this is the answer but not 100% sure.


6 0
2 years ago
Why does a transformer require AC rather than DC?
LuckyWell [14K]
So if the voltage in case of DC<span> is same as </span>AC<span>, </span>then DC<span> current is larger </span>than AC<span>current. A </span>transformer<span> works on the principle of electromagnetic induction. It means that the change in magnetic flux across a coil induces a potential difference across the same.

Hope this sorta helps! I'm new to this!</span>
5 0
3 years ago
Read 2 more answers
If the students were told that one of the materials was titanium and that titanium is still a solid when heated to 1,000°C, whic
Paladinen [302]

The sample having solid substance is considered as titanium.

<h3>Which sample was titanium?</h3>

That sample is considered as Titanium which is still present as a solid substance because all the other samples turns into liquid state due to high temperature.

While on the other hand, the sample which contains titanium has a solid particles and still solid on high temperature so we can conclude that the sample having solid substance is considered as titanium.

Learn more about titanium here: brainly.com/question/11496905

5 0
2 years ago
Which units are used to measure both velocity and speed? Select three options
Ede4ka [16]

Answer and Explanation:

The options aren't listed in your question, but here are some units that are regularly and normally used (in the classroom and in the outside world):

(The SI unit of distance and displacement is the meter. The SI unit of time is the second.)

<u>Meters per Second (m/s)</u>

kilometers per hour (km/hr)

kilometers per second (km/sec)

To find the average speed, you do distance divided by time.

To find the average velocity, you do the final position minus the initial position, divided by the final time minus the initial time.

<em><u>#teamtrees #PAW (Plant And Water)</u></em>

<em><u></u></em>

<em><u>I hope this helps!</u></em>

8 0
3 years ago
Other questions:
  • What is the ph of a 2.7 m solution of hclo4?
    10·1 answer
  • The chart below describes the molecular motion in solids, liquids, gases, and plasma.
    12·1 answer
  • Insulin is a protein that is used by the body to regulate both carbohydrate and fat metabolism. A bottle contains 425 mL of insu
    11·1 answer
  • What is a reaction called that has heat as a product (gives off heat)?
    7·2 answers
  • How is enthalpy used to predict whether a reaction is endothermic or exothermic? when the enthalpy of the reactants is higher th
    8·2 answers
  • In the sentence "The constituent elements of water are hydrogen and oxygen,"what does the word constituent mean?
    8·2 answers
  • For scientific notation, when i move the decimal to the left the the exponent get bigger or smaller?
    10·1 answer
  • What is the difference between bulk and particle scale? <br> Someone please help!!
    5·1 answer
  • What effect does an increase in carbon dioxide (CO 2 ) have on the concentration of hydrogen ions (H^ + ) in the blood?
    11·1 answer
  • How were the compounds that formed when calcium ion solution was mixed with the anion solutions different from the compounds tha
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!