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Afina-wow [57]
2 years ago
8

Atoms with different numbers of neutrons in their nucleus are:.

Chemistry
1 answer:
bonufazy [111]2 years ago
5 0

Answer: They are referred to as isotopes, which are a form of an element that has different numbers of neutrons in their nucleus.

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Answer:

B

Explanation:

Not sure, but that one makes the most since

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3 years ago
A very small country that has managed to stay independent of their larger neighbors. (Example: Vatican City)
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First option (Independent State)

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3 years ago
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The size (radius) of an oxygen molecule is about 2.0 ×10−10m. Make a rough estimate of the pressure at which the finite volume o
belka [17]

Answer:

Explanation:

We can calculate the volume  of the oxygen molecule as the radius of oxygen molecule is given as 2×10⁻¹⁰m.

We know that volume=4/3×πr³

volume =4/3×π(2.0×10⁻¹⁰m)³

volume=33.40×10⁻³⁰m³

Volume of oxygen molecule=33.40×10⁻³⁰m³

we know the ideal gas equation as:

PV=nRT

k=R/Na

R=k×Na

PV=n×k×Na×T

n×Na=N

PV=Nkt

p is pressure of gas

v is volume  of gas

T is temperature of gas

N is numbetr of molecules

Na is avagadros number

k is boltzmann constant =1.38×10⁻²³J/K

R is real gas constant

So to calculate pressure using the  formula;

PV=NkT

P=NkT/V

Since there is only one molecule of oxygen so N=1

P=[1×1.38×10⁻²³J/K×300]/[33.40×10⁻³⁰m³

p=12.39×10⁷Pascal

8 0
3 years ago
Help!!!
aleksley [76]

Answer:

Q1) Distillation relies on evaporation to purify water

Explanation:

contaminated water is heated to form steam. inorganic compounds and large non-volatile organic molecules do not evaporate with the water and are left behind. The steam then cools and condenses to form purified water

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What is the chemical reaction that occurs during photosynthesis ​
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endothermic change occurs

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photosynthesis, is an endothermic reaction in which energy is absorbed from the surrounding.

hope this helps

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