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KIM [24]
3 years ago
12

What makes an isotope radioactive? Are all isotopes radioactive?

Biology
1 answer:
soldier1979 [14.2K]3 years ago
4 0

Answer:

Radioactive Elements

In elements with more than 83 protons, all of the isotopes are radioactive. ... The force of repulsion among all those protons makes the nuclei unstable. Elements with more than 92 protons have such unstable nuclei that they don't even exist in nature.

Explanation:

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True or False. Genes determine the traits of an organism.
MakcuM [25]

Answer:

True

Explanation:

A trait is a specific characteristic of an organism. Traits can be determined by genes or the environment, or more commonly by interactions between them. The genetic contribution to a trait is called the genotype. The outward expression of the genotype is called the phenotype.

7 0
3 years ago
If you were having a problem converting food to energy, which system might you want to have checked? A. Digestive system. B. Ner
yaroslaw [1]
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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
3 years ago
Discussion of the observations of an experiment of epidermal cell of onion bulb
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Solution
Cut open an onion.
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Carefully place a coverslip over the layer.
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2 years ago
What function does the adipose tissue surrounding the heart serve?
Sladkaya [172]
The Adipose tissue mainly works as storing energy into fat but it also works as an insulating layer that allows less heat to escape the body, as well as offer protection to major organs.
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