What are the differences among tree species according to leaf shape?

1 answer:

7 0

<span>The arrangement of leaves on a stem shows the differences in trees , and this helps identify a tree during the growing season. The presence or absence of lobes on a leaf can also identify the species of a tree. The leaves also vary in shape, which indicates the position that it has on the tree. Also, some leaves are simple leaves, and others are compound leaves. Vein patterns and leaf edges can also indicate the type of tree that a leaf came from.</span>

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Select the correct answer. Which statement correctly explains the polarity of the water molecule? A. The hydrogen end of the mol

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Answer:

option B) The oxygen end of the molecule has a partial negative charge and the hydrogen end has a partial positive charge.

Justification:

The electronegativity of an element accounts for its relative ability to attract electrons.

Being oxygen more electronegative than hdyrogen (the electronegativity of oxygen is 3.44 while the electronegativity of the hydrogen is 2.20), the electron density will be displaced toward the oxygen, letting it with a partial negative charge and the hydrogen with a partial positive charge.

Finally, since the charge is not symmetrical distributed around a center of the molecule, the molecule ends being polar.

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