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
taurus [48]
3 years ago
15

a piece of food is burned in a calorimeter that contains 200.0g of water. If the temperature of the water rose from 65.0°C to 83

.0°C, how much heat energy in joules was contained in the food? Specific heat if water is 4.184 j/g°C.
Chemistry
1 answer:
Flauer [41]3 years ago
4 0

Answer: 15062.4 Joules

Explanation:

The quantity of heat energy (Q) required to heat a substance depends on its Mass (M), specific heat capacity (C) and change in temperature (Φ)

Thus, Q = MCΦ

Since,

Q = ?

Mass of food = 200.0g

C = 4.184 j/g°C

Φ = (Final temperature - Initial temperature)

= 83.0°C - 65.0°C = 18°C

Then, Q = MCΦ

Q = 200.0g x 4.184 j/g°C x 18°C

Q = 15062.4 J

Thus, 15062.4 joules of heat energy was contained in the food.

You might be interested in
Identify the products and the reactants in the following chemical equations
liq [111]

Answer:

1-Mg+O2=reactants                  MgO-product

2-CaNr2+AlCl3=reactants        CaCI2+AIBr3=product

3-C2H4+O2=reactants              H2O+CO2=product

Explanation:

Reactants are on the left side and products on the right.

6 0
2 years ago
Non-examples of air pressure
Anuta_ua [19.1K]
No pressure







Ahhhhhh (filling character req)
8 0
2 years ago
Modeling Nuclear Processes Quick Check
Valentin [98]

The phrase which best describes nuclear fusion is: A. the process by which small nuclei combine into a larger nucleus.

A nuclear reaction can be defined as a type of chemical reaction in which the nucleus of an atom of a radioactive chemical element is transformed by either being joined (fusion) or split (fission) with the nucleus of another atom of a radioactive chemical element and accompanied by a release of energy.

Generally, there are two (2) main types of nuclear reaction and these include:

  • <u>Nuclear fission:</u> it involves the collision of a heavy atomic nucleus with a neutron, thereby causing a split and release of energy.
  • <u>Nuclear fusion:</u> it involves the joining of two smaller nuclei of atoms to form a single massive or heavier (larger) nucleus with the release of energy.

In conclusion, nuclear fusion is best described as the process by which small nuclei combine into a larger nucleus, accompanied by a release of energy.

Read more: brainly.com/question/24040465

4 0
2 years ago
Which type of matter can be separated by physical means? A. atom B. element C. compound D. mixture
madreJ [45]

Answer:

b

Explanation:

A pure substance has a constant composition and cannot be separated into simpler substances by physical means. There are two types of pure substances: elements and compounds.

7 0
2 years ago
Read 2 more answers
Can someone plz help I also mark braniliest!
NNADVOKAT [17]

Answer:

D. The chemical formula

Explanation:

For example, in the compound KCl, we know that there are two elements present because you can see it in the chemical formula. We know that KCl consists of potassium and chloride ions.  

6 0
2 years ago
Other questions:
  • Why does a candle relight if a match is held above the wick just after the flame is<br> blown out?
    11·1 answer
  • What is the energy that occurs in teh conversion of an ion ic solid to a widely spread gas?
    8·1 answer
  • 3) (2 points) The phenolic indicator (In-OH) has approximately the same pKa as a carboxylic acid. Which H is the most acidic pro
    11·1 answer
  • What is the volume of 3.5 moles of oxygen gas (O2) at standard temperature and pressure (STP)?
    12·2 answers
  • What is the number of electrons in the outermost energy level of an oxygen atom?
    13·1 answer
  • Burning magnesium gives us magnesium oxide. This is an example of a reaction.
    14·2 answers
  • Lab Investigator: Chemical reactions cannot be used for what?
    13·2 answers
  • From the figure of the electrochemical cell, what is producing the current in the wire connecting the electrodes?
    6·2 answers
  • Which pair of molecules have the same empirical formula?
    13·1 answer
  • Please help me with question A and B pleaseeeeee
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!