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3 years ago

What is the nuclear charge of this ion?

Biology

1 answer:

saw5 [17]3 years ago

3 0

nuclear charge is always positive, because there are only protons in the nucleus, and protons are always positive.

But this is in general, because you have not mentioned the ion name.

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A student wants to prove that amphibians appeared on earth before birds. which of these would provide the most reliable informat

Wewaii [24]

A student wants to prove that amphibians appeared on earth before birds. The student should use the fossil findings as evidence to provide the most reliable information about the periods when amphibians and birds appeared on earth. Fossils would throw light on the internal body structures that bear the closest similarity to either the amphibians or the birds. The radiocarbon dating of the fossils will reveal its age. This can be used to figure out the time of divergence of the two types.

5 0

3 years ago

An object is dropped on earth from a height of 15 m. How long does it take to reach the ground

maks197457 [2]

Speed = 17.2 m/s...................

4 0

3 years ago

How the life functions of a unicelluar oragnism are carried out

slavikrds [6]

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2 years ago

Adults with more than a twelve (12)-month history of migraines were assigned randomly in a double-blinded study to receive treat

stich3 [128]

Answer:

Phase III.

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3 years ago

What are the precautions that should be token when using a photometer? please help me

Maksim231197 [3]

Answer:

PRECAUTIONS FOR USING A SPECTROPHOTOMETER :

1 . By allowing the lamps and electronics to warm up

2.By cleaning up any spills inside the cuvette compartment

3.By carrying out the set-up procedure in the correct order

4.By ensuring that %T or transmission is used as appropriate

5.By closing the door to the cuvette compartment before reading the result

6.By performing calibration checks after set up

7.By wiping fingerprints and spilt sample off the outside of the cuvette before measuring

8.By using the correct wavelength

PRECAUTIONS FOR USING A FRAME PHOTOMETER:

1. Do not move or Carry the unit when in use or connected to the mains electricity supply

2. There should be sufficient time for the chimney to cool before handling

3. Do not use acetylene with the flame photometer

4. Over adjustment of the fuel valve will cause excess flame

Do not position the product so that it is difficult to disconnect from the mains supply

5. Do not cover the chimney whilst in use.

6. Do not block or obstruct ventilation slots /airways

7. Do not operate or handle any part of the product with wet hands

I HOPE THIS WILL HELP AND IF NOT LET ME KNOW

8 0

2 years ago