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BartSMP [9]
4 years ago
10

The length of a vector arrow represents its magnitude and the point represents its direction

Chemistry
2 answers:
Viefleur [7K]4 years ago
3 0

The answer is: True.

The magnitude of a vector is represented by the length of the arrow.

The arrow length is drawn according a chosen scale.

For example, the diagram shows a vector with a magnitude of 100 kilometers, if the scale used for constructing the diagram is 1 cm = 10 km, the vector arrow is drawn with a length of 10 cm.

The arrow has an obvious tail and arrowhead. The arrow points in the precise direction.

marin [14]4 years ago
3 0

Answer:

True

Explanation:

Scalar quantities have only magnitude whereas vector quantities have both magnitude and direction. Speed is a scalar quality whereas velocity is a vector quantity as velocity has both a magnitude and direction. Vectors are represented by a line with an arrow head. The magnitude of the vector is represented by the length of the line and the arrow head points to the direction of the vector.

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The compound Xe(CF3)2 decomposes in afirst-order reaction to elemental Xe with a half-life of 30. min.If you place 7.50 mg of Xe
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Answer:

t=147.24\ min

Explanation:

Given that:

Half life = 30 min

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Using integrated rate law for first order kinetics as:

[A_t]=[A_0]e^{-kt}

Where,  

[A_t] is the concentration at time t

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Time = ?

Applying in the above equation, we get that:-

0.25=7.50e^{-0.0231\times t}

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750e^{-0.0231t}=25

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