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kicyunya [14]
3 years ago
8

What is the concentration (M) of sodium ions in 4.57 L of a 0.398 M Na3PO4 solution?

Chemistry
1 answer:
____ [38]3 years ago
5 0

0.398=mol/4.57L. mol= 1.818. 1.818*3=5.456. 5.456/(4.57L)=1.19 M

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State one medical use of radioactive isotopes
Korvikt [17]

Answer:

Radioactive isotopes are widely used in medical field

Explanation:

Radioactive isotopes are widely used in medical field.

Radiations emitted by radioactive isotopes or used to kill the microorganism in food and to increase the shelf life of food.

Cobalt-60 is used to treat the cancer.

Iodine-131 is used to check the activity of thyroid.

Technetium-99 also used for the thyroid.

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5 0
3 years ago
Which of the following includes the correct pairing of volcano and its formation? Cinder volcano; large, explosive eruptions Cin
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The correct pairing of the volcano to its formation would be the composite volcano wherein it usually yields large and violent eruptions. In addition to that, composite volcanoes or also known as the stratovolcano is usually made of materials containing increasing layers of hardened lava.
4 0
3 years ago
Read 2 more answers
Which is an example of flow of heat through conduction
JulsSmile [24]

Answer:

a metal spoon left in boiling water

Explanation:

5 0
3 years ago
Many tests to distinguish aldehydes and ketones involve the addition of an oxidant. Only __________ can be easily oxidized becau
tatiyna

Answer:

  1. Aldehydes
  2. A hydrogen atom
  3. Oxygen

Explanation:

Many tests to distinguish aldehydes and ketones involve the addition of an oxidant. Only <u>aldehydes</u> can be easily oxidized because there is<u> a hydrogen atom</u> next to the carbonyl and oxidation does not require<u> oxygen </u>

4 0
3 years ago
What is the energy per mole of photons, in kJ/mol, emitted by an argon ion laser which produces a green beam with a frequency of
Serga [27]

Answer:

Energy per mole of photons = 2.31 × 10^2 KJ/mol

Explanation:

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Therefore, the energy per mile of photon is 3.84 × 10^-22 KJ × 6.02 × 10^23

Energy per mile of photon = 2.31 × 10^2 KJ/mol

5 0
2 years ago
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