A chemical change is a change that results in new chemicals (the reactants underwent a chemical change which resulted in new products).
an example of a chemical change is the burning of paper. An example of something that is not a chemical change is the melting of ice.
Option C: The dissociation of a polar covalent compound in water.
Sugar is made up of sucrose molecules containing polar covalent bonds. They have same type of oxygen-hydrogen covalent bonds that are present in water.
Since, sugar is not an ionic compound, option a and option b are incorrect. Also, due to same type of bonding in water and sugar molecules there will be no such force of attraction between them, this will opt out the option d.
Thus, dissolution of sugar in water is the dissociation of a polar covalent compound in water and option c is correct.
The heat transfer will only occur in setup 2 and heat will only flow from C to D.
<h3>
Heat energy</h3>
In a mixture between two substances of different temperatures, there is heat transfer, in which the one with a lower temperature receives this heat and the one with a higher temperature loses the heat.
In a system, the value of heat lost and received is <u>equal</u>.
So, heat will only flow in setup 2 since it is the only one that has two bodies with different temperatures, and it will flow from C to D because C has a higher temperature.
The representation of heat transfer can be done as follows:
C ⇒ D
Learn more about heat energy in: brainly.com/question/1495272
Hey there!
N₂ + H₂ → NH₃
Balance N.
2 on the left, 1 on the right. Add a coefficient of 2 in front of NH₃.
N₂ + H₂ → 2NH₃
Balance H.
2 on the left, 6 on the right. Add a coefficient of 3 in front of H₂.
N₂ + 3H₂ → 2NH₃
This is our final balanced equation:
N₂ + 3H₂ → 2NH₃
Hope this helps!
Answer:
A
Explanation:
it has non polar molecule, because it has the equal sharing of electrons, so equal repulsion from all sides. atoms are equally represented.
