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vagabundo [1.1K]
3 years ago
15

An individual picks up a cup and drinks from it. This is an example of __________.

Chemistry
2 answers:
Lesechka [4]3 years ago
6 0

Answer:

A

Explanation:

The correct answer is: A) "A concentric contraction because muscles cause the elbow joint and arm to move"

Softa [21]3 years ago
6 0

Answer:

A. a concentric contraction because muscles cause the elbow joint and arm to move.

Explanation:

Contraction is the phenomenon in which the muscles of our body get activated by the tension produced. When the muscle of our body shortens, caused by the tension applied on our muscle is called concentric contraction. The force produced by the muscle as it shortens bring the cup near our body. There it is an example of concentric contraction.

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What is the IUPAC name of the following compound?
pentagon [3]

Answer:

(d) 3,7-dimethyl-4-nonyne.

Explanation:

Hello,

In this case, considering the attached picture on which you can see that the main chain has nine carbon atoms, one tripe bond at the fourth carbon and two methyl radicals at the third and seventh carbons respectively, by following the IUPAC rules, the name would be: (d) 3,7-dimethyl-4-nonyne since the chain must start at the side closest to the first triple bond due to its priority and subsequently considering the present radicals.

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Minchanka [31]
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2 years ago
For the following reaction, the equilibrium constant Kc is 0.80 at a certain temperature. If the concentration of NO(g) and NOBr
velikii [3]

Answer:

[Br₂] =  1.25M

Explanation:

        2NO (g)  +  Br₂ (g)   ⇄   2NOBr (g)

Eq    0.80M            ?                0.80M

That's the situation told, in the statement.

Let's make the expression for Kc

Kc = [NOBr]² / [Br₂] . [NO]²

Kc = 0.80² / [Br₂] . [0.80]²

0.80 = 1 / [Br₂]

[Br₂] = 1 / 0.80 → 1.25

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