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
cluponka [151]
4 years ago
9

If the specific heat capacity of water is 4.19 J/(g⋅K), how much energy would be required to raise the temperature of 100.0 g of

water by 2.00 °C?
Chemistry
1 answer:
Novosadov [1.4K]4 years ago
3 0
<h3>Answer:</h3>

838 Joules

<h3>Explanation:</h3>
  • To calculate amount of heat required we multiply mass of water by the specific heat capacity and then by change in temperature.
  • That is; Q =m×c×ΔT

We are given;

Specific heat capacity of water, c = 4.19 J/g.K

Mass of water, m = 100.0 g

Change in temperature, ΔT = 2.00°C or 2 K

Therefore;

Q = mcΔT

  = 100 g ×  4.19 J/g.K × 2K

  = 838 Joules

Thus, the energy required is 838 Joules

You might be interested in
Which element is nuclear fusion least likely to produce?
adoni [48]

Answer:

silicon

Explanation:

i think

6 0
4 years ago
Read 2 more answers
An insulator,
Sedaia [141]
Hey there !

The answer would be C. Is when electrons cannot nice through objects easily.

Any material that keeps energy such as electricity, heat, or cold from easily transferring through is an insulator. Wood, plastic, rubber, and glass are good insulators.

Hope this helps !
8 0
3 years ago
What is the value of R in the ideal gas law?
dybincka [34]
It’s option B 0.0821L.atm/mol.K
5 0
3 years ago
78.6 grams of O2 and 67.3 grams of F2 are placed in a container with a volume of 40.6 L. Find the total pressure if the gasses a
saul85 [17]

1) List the known and unknown quantities.

<em>Sample: O2.</em>

Mass: 78.6 g.

Volume: 40.6 L.

Temperature: 43.13 ºC = 316.28 K.

<em>Sample: F2.</em>

Mass: 67.3 g.

Volume: 40.6 L.

Temperature: 43.13 ºC = 316.28 K.

2) Find the pressure of O2.

<em>2.1- List the known and unknown quantities.</em>

<em>Sample: O2.</em>

Mass: 78.6 g.

Volume: 40.6 L.

Temperature: 43.13 ºC = 316.28 K

Ideal gas constant: 0.082057 L * atm * K^(-1) * mol^(-1).

<em>2.2- Convert grams of O2 to moles of O2.</em>

The molar mass of O2 is 31.9988 g/mol.

mol\text{ }O_2=78.6\text{ }g*\frac{1\text{ }mol\text{ }O_2}{31.9988\text{ }g\text{ }O_2}=2.46\text{ }mol\text{ }O_2

<em>2.3- Set the equation.</em>

Ideal gas constant: 0.082057 L * atm * K^(-1) * mol^(-1)

PV=nRT

<em>2.4- Plug in the known quantities and solve for P.</em>

(P)(40.6\text{ }L)=(2.46\text{ }mol\text{ }O_2)(0.082057\text{ }L*atm*K^{-1}*mol^{-1})(316.28\text{ }K)

<em>.</em>

P_{O_2}=\frac{(2.46\text{ }mol\text{ }O_2)(0.082057\text{ }L*atm*K^{-1}*mol^{-1})(316.28\text{ }K)}{40.6\text{ }L}P_{O_2}=1.57\text{ }atm

<em>The pressure of O2 is 1.57 atm.</em>

3) Find the pressure of F2.

<em>3.1- List the known and unknown quantities.</em>

<em>Sample: F2.</em>

Mass: 67.3 g.

Volume: 40.6 L.

Temperature: 43.13 ºC = 316.28 K.

Ideal gas constant: 0.082057 L * atm * K^(-1) * mol^(-1).

3.2- <em>Convert grams of F2 to moles of F2.</em>

The mmolar mass of F2 is 37.9968 g/mol.

mol\text{ }F_2=67.3\text{ }g\text{ }F_2*\frac{1\text{ }mol\text{ }F_2}{37.9968\text{ }g\text{ }F_2}=1.77\text{ }mol\text{ }F_2

<em>3.3- Set the equation.</em>

Ideal gas constant: 0.082057 L * atm * K^(-1) * mol^(-1)

PV=nRT

<em>3.4- Plug in the known quantities and solve for P.</em>

(P)(40.6\text{ }L)=(1.77\text{ }mol\text{ }F_2)(0.082057\text{ }L*atm*K^{-1}*mol^{-1})(316.28\text{ }K)

<em>.</em>

P_{F_2}=\frac{(1.77molF_2)(0.082057L*atm*K^{-1}*mol^{-1})(316.28K)}{40.6\text{ }L}P_{F_2}=1.13\text{ }atm

<em>The pressure of F2 is 1.13 atm.</em>

4) The total pressure.

Dalton's law - Partial pressure. This law states that the total pressure of a gas is equal to the sum of the individual partial pressures.

<em>4.1- Set the equation.</em>

P_T=P_A+P_B

4.2- Plug in the known quantities.

P_T=1.57\text{ }atm+1.13\text{ }atmP_T=2.7\text{ }atm

<em>The total pressure in the container is </em>2.7 atm<em>.</em>

5 0
1 year ago
6. Compare and Contrast How are the properties of acids and bases similar? How are they different?
baherus [9]

\huge\underline{\red{A}\blue{n}\pink{s}\purple{w}\orange{e}\green{r} - }

  • Acids and bases both react with water and a lot of acids and bases are soluble in nature.
  • Both acids and bases are electrolytes which means that they’re good conductors of electricity.
  • Acids and bases both produce ions in water solution.
  • Acids release hydrogen ions (H+) whereas Bases release hydroxide ions (OH–).
4 0
2 years ago
Other questions:
  • How do you test a hypothesis using scientific inquiry
    8·1 answer
  • How many helium atoms are there in a helium blimp containing 540 kg of helium?
    9·1 answer
  • PLEASE HELP, CHEMISTRY!!! 20 POINTS!!!
    8·2 answers
  • I find that there are 500 atoms of U-235 and 1500 atoms of Pb-207. If we assume the mineral contained only parent and no daughte
    8·1 answer
  • Which two elements have properties that are the most similar?
    8·1 answer
  • Pleassssdseee help meee
    12·1 answer
  • GIVE REASON: <br>1.Trees catches fire<br>2.We cannot put off fire due to electric shock by water​
    11·2 answers
  • This is true for the body being attracted as well. Bodies of water that are smaller than oceans, seas, and large lakes are _____
    6·1 answer
  • A force of 100 newtons was necessary to lift a tree. A total of 50 joules of work was done. How far was the tree lifted
    11·1 answer
  • Hi, I am trying to calculate the dosage of mg i should be taking per night. I am 135 pounds 5’7.
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!