3 years ago

What subatomic particles make up the nucleus of an atom (select ALL that are in the nucleus)

Chemistry

1 answer:

Ilia_Sergeevich [38]3 years ago

3 0

3 and 4 i would think

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Air pressure decreases more rapidly with altitude within a column of ________ air than in a column of __________ air.

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Air Pressure drops more rapidly with altitude in a column of cold air than in warm air.The answers to this question are cold air and warm air, respectively.
<span>Cold air is known to be dense while warm air is known otherwise to be less thens which makes it move upwards. Cold air experiences more pressure as it moves upwards.</span>

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3 years ago

ANSWER ASAP

Aleksandr-060686 [28]

Answer:

4 orbits in the fourth period.

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A solution is one type of matter dissolved into a liquid or a ______

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Alecsey [184]

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An aqueous magnesium chloride solution is made by dissolving 7.15 moles of MgCl2 in sufficient water so that the final volume of

irinina [24]

Answer:

2.86mol/L

Explanation:

Given parameters:

Number of moles of MgCl₂ = 7.15moles

Volume of solution = 2.50L

Unknown:

Molarity of the MgCl₂ solution = ?

Solution:

The molarity of a solution is the number of moles of solute found in a given volume.

Molarity = $\frac{number of moles }{volume}$

Insert the parameters and solve;

Molarity = $\frac{7.15}{2.5}$ = 2.86mol/L

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3 years ago