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
Pepsi [2]
4 years ago
13

4. Evaluate the information contained in this calculation and complete the

Chemistry
1 answer:
Neporo4naja [7]4 years ago
7 0

Since you did not give a calculation, I will just give an example. Suppose that you are to burn 5 kg of methane (CH4) from 0 to 10°C. The specific heat capacity of methane is 4.475 kJ/kg-K.

H = mCpT

H = (5kg)( 4.475 kJ/kg-K)(10-0)

H = 223.75 kJ

Because the enthalpy is positive in value, methane takes in heat. 

You might be interested in
How many moles of Li3N will be created using 0.24 moles of Li in the given reaction? 6Li + N2 2Li3N
andreyandreev [35.5K]
6 Li + N2 =  2 Li3N

6 moles Li ---------> 2 moles Li3N
0.24 moles Li ------>  ?

moles Li3N =  0.24 * 2 /  6

=  0.48 / 6 

= 0.08 moles of li3N

hope this helps!.

7 0
3 years ago
Read 2 more answers
A and B are powders, A is insoluble while B dissolves to give a pH 3 solution. Mixing A and B gives bubbles or effervescence and
Vladimir [108]

Answer:

I think it is a nitric acid

6 0
4 years ago
Read 2 more answers
A) Draw and label five water molecules in a beaker of liquid water and five water molecules a beaker of frozen water. So you hav
OLga [1]

Answer:

A) Please see attachment

B) Please see attachment

C) Please see attachment

D) Please see attachment

E) Please see attachment

F) Because the water molecules interact differently in the solid state and in the liquid state.

Explanation:

As you can observe in the attached drawing, the water molecule is a polar molecule, which means that it has an irregular distribution of its electron density, and that is why closer to the oxygen atom there is partial negative charge, and closer to the hydrogen atoms there is a partial positive charge.

The hydrogen bonds are the intermolecular forces between the hydrogen atom and the oxygen, which is a very electronegative element, and it is the force that keeps the water molecules together. On the other hand, we have the covalent bonds, which are intramolecular forces that bond the hydrogen atoms to the oxygen atoms, and in this way the water molecule is stabilized.

The drawings between water molecules in liquid water and in frozen water are different simply because the water molecules interact and accommodate differently depending on which is the state of matter. In this case, in the liquid state, the molecules are more scattered, they have more energy, so they tend to form a more "messy" arrangement between them, an arrangement that will depend on the way the hydrogen bonds are formed. On the other hand, in the solid state the molecules have very little space between them, they have less energy because of that, so they tend to form a more organized arrangement between them, just like a crystalline structure, which is also due to the orientation of the hydrogen bonds.

6 0
3 years ago
Describe at least 3 biotic and 3 abiotic factors found in that ecosystem and do not tell which ecosystem you chose
Andrew [12]
Abiotic factors are the non-living parts of the environment that can often have a major influence on living organisms. Abiotic factors include water, sunlight, oxygen, soil and temperature. Water (H2O) is a very important abiotic factor – it is often said that “water is life.” All living organisms need water.
4 0
3 years ago
Please help me out! Fr
il63 [147K]

<em>please</em><em> </em><em>wait </em><em>I </em><em>am </em><em>answering</em>

6 0
3 years ago
Other questions:
  • The attraction between molecules get stronger as you move from
    7·1 answer
  • Which choice is not true of a liquid in a glass capillary with a convex meniscus?
    5·2 answers
  • Which of the following is not true about the dilution of a solution?
    15·1 answer
  • 36g of KOH dissolved in 800mL of water. What is the molality of the solution?
    14·1 answer
  • How many moles of ammonium sulfate. are required to create 200 liters of a 3 M solution ​
    14·1 answer
  • Heated air moves from baseboard heaters to the rest of the room in a process called
    5·1 answer
  • 550-
    9·1 answer
  • What happens to the ice on a frozen lake, when the<br> temperature changes?<br> Uhkhub hbi
    13·1 answer
  • What other inventions came because of the microscope? (These are inventions that are related to the microscope in some way.)
    12·1 answer
  • propose a method to check whether a compound is benzene hexene or hexane? (Benzene: C6H6, hexene: C6H12, hexane: C6H14)​
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!