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3 years ago

Which is the best piece of equipment to use to measure exactly 4.0 mL of a liquid?

Chemistry

1 answer:

Gwar [14]3 years ago

3 0

A Glass pipet

Explanation:

The best laboratory equipment to measure out exactly 4.0mL of a liquid is a pipet.

The pipet is a glass tube with a suction as tthe top.

It is designed for measuring small units of volume accurately.
Once dipped into the fluid, the suction is pressed and the liquid gushes in.
When released, the liquid fills the tube.
The suction can be pressed at regular intervals to release the liquid till the desired volume is attained.

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Answer: Option (D) is the correct answer.

Explanation:

Atomic number of chlorine is 17 and its electronic distribution is 2, 8, 7.

So, in order to attain stability it tends to gain one electron from a donor atom. Therefore, a chlorine ion is formed as $Cl^{-1}$ .

As it gains only one electron that is why, -1 charge occurs.

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