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ASHA 777 [7]
3 years ago
14

The stability of an isotope is based on its

Chemistry
1 answer:
lidiya [134]3 years ago
4 0

Answer:

It is believed that the stability of an isotope is based on the ratio of neutrons to protons.

+if this helped you, please consider marking it the Brainliest in order to help me unlock the next achievement.

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Express the following quantity in scientific notation. The answer needs to have the correct number of significant figures. 21,30
melisa1 [442]
2.13 x 10 E 7 i believe this is correct
4 0
3 years ago
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How many CO2 molecules in 0.0189 mol of CO2?
Blizzard [7]

Answer:

option C is correct = 1.14 × 10²² molecules of  CO₂

Explanation:

Given data:

Number of moles of CO₂ = 0.0189 mol

Number of molecules = ?

Solution:

The given problem will solve by using Avogadro number.

It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.

The number 6.022 × 10²³ is called Avogadro number.

For example,

18 g of water = 1 mole = 6.022 × 10²³ molecules of water

For given question:

1 mole of CO₂ =  6.022 × 10²³ molecules of  CO₂

0.0189 mol of CO₂ ×  6.022 × 10²³ molecules of  CO₂ / 1mol

1.14 × 10²² molecules of  CO₂

Thus, option C is correct.

4 0
3 years ago
Which term refers to a small group of atoms that are attached to larger molecules, providing them with specific chemical propert
stepan [7]
Answer: Small groups of atoms that are attached to larger molecules, giving the specific chemical properties, are called functional groups.

explanation: Functional groups are groups of atoms in a molecule that possess the same chemical feature every time it appears in several compounds. There are various types of functional groups and they have the tendency to react in definite ways. Examples include; the ether functional group (consists of an oxygen atom that forms single bonds with two carbon atoms),the alcohol functional group (consists of an oxygen atom that is bonded to one hydrogen atom and one carbon atom), and the amine functional group (consists of a nitrogen atom bonded to some combination of carbons and hydrogens).
5 0
2 years ago
PLEASE HELP 30 POINTS
posledela

The answears are in the attached photo.

4 0
3 years ago
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What happens to salt water and fresh water when you try to mix them.
torisob [31]

Answer:

the lighter fresh water rises up and over the salt water

Explanation:

this is because the salt water is denser

5 0
3 years ago
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