<span>Similarities and dissimilarities between the organisms - similar featured organisms will be kept in one group and dissimilar featured organisms in other group. Different features like no. of cells, nature of body surface, nature of body cavity nature of skeleton, nature of locomotion, nature of sexual parts, nature of circulatory system etc.</span>
Answer:
The gasoline undergoes a change as it burns.
Explanation:
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Answer:
w = -531 kJ
1. Work was done by the system.
Explanation:
Step 1: Given data
- Heat gained by the system (q): 687 kJ (By convention, when the system absorbs heat, q > 0).
- Change in the internal energy of the system (ΔU°): 156 kJ
Step 2: Calculate the work done (w)
We will use the following expression.
ΔU° = q + w
w = ΔU° - q
w = 156 kJ - 687 kJ
w = -531 kJ
By convention, when w < 0, work is done by the system on the surroundings.
The polar characteristic of water helps it form strong bonds with other water molecules.
<h3>What is polar structure?</h3>
A polar molecule is a molecule in which one end of the molecule is slightly positive, while the other end is slightly negative.
The attractive force between water molecules is a dipole interaction.
The hydrogen atoms are bound to the highly electronegative oxygen atom (which also possesses two lone pair sets of electrons, making for a very polar bond).
Hence, option D is correct.
Learn more about polar bonds here:
brainly.com/question/10777799
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Explanation:
A. Force = Mass x Acceleration