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Gekata [30.6K]
3 years ago
12

Help would be majorly appreciated

Chemistry
1 answer:
Sophie [7]3 years ago
6 0

Answer:

a) the atomic number is 15

b) the mass number is 15+16 = 31

c) element is phosphorus

d)Group 15 period 3

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B) Volumetric pipette – Glassware used to accurately transfer a small, single volume.

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Graduated pipette – Glassware used to accurately transfer small volumes.

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Volumetric pipette – Glassware used to accurately transfer a small, single volume.

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Beaker – Glassware best used when greater access to the contents is needed.

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Buret – Glassware used to deliver a volume not known in advance.

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Volumetric flask – Glassware used to make accurate solutions.

The volumetric flask is also an important glassware in the analytical laboratory. It is used to prepare standard solutions. It is a flask which has a ring like marking that is its calibrated volume. The mentioned volume of volumetric flask is calibrated to have accurate volume.

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