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Papessa [141]
3 years ago
7

HELP! WILL MARK BRAINLIEST! ASAP!!

Chemistry
1 answer:
lilavasa [31]3 years ago
8 0

Answer:

Mn is a Paramagnetic

Explanation:

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A sample of silicon rejected for use in an electronic circuit has an impurity of boron at a level of 3 parts per trillion. What
Law Incorporation [45]

Answer:

A. 3 x 10-12

Explanation:

Generally, the parts-per notation is used to represent very small concentration without any specific unit.

Parts per million is notated as 10^{-6}

Parts per billion is notated as 10^{-9}

Parts per trillion is notated as 10^{-12}

Hence, 3 parts per trillion will be written as 3 x 10^{-12}

The correct option is A.

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The volume of a gas is 4.0 L when the pressure is 1.00 atm. At the same temperature, what is the pressure at which the volume of
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<u>Answer:</u> 2.00 atm

<u>Explanation:</u>

The gas is kept under the same temperature in this problem. Assuming the amount of gas is constant, we can apply the Boyle's law.

The Boyle's law equation,

P₁V₁ =  P₂V  ₂

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1.00 atm x 4.0 L =  P₂  x 2.0 L

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4.00 atm L = 2  P₂ L

Now flip the equation,

2  P₂ L = 4.00 atm L

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P₂ = 2.00 atm

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c. ceramic

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because b d and a are metals c is not

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