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2 years ago

What is the most stable condition for an atom

2 answers:

7 0

Atoms are at their most stable when their outermost energy level is either empty of electrons or filled with electrons. Ions. sodium and chlorine chloride ion. Sodium atoms have 11 electrons.

Tems11 [23]2 years ago

3 0

<span>Atoms are at their most stable when their outermost energy level is either empty of electrons or filled with electrons.</span>

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mote1985 [20]

Answer:

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2 years ago

Help please please please!

LenaWriter [7]

Answer:

I say the second one, im not rlly sure tho

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2 years ago

An unknown piece of metal weighing 95.0 g is heated to 98.0°C. It is dropped into 250.0 g of water at 23.0°C. When equilibrium i

lutik1710 [3]

Answer:

$C_{metal}=126.6\frac{J}{g\°C}$

Explanation:

Hello!

In this case, when two substances at different temperature are put in contact and an equilibrium temperature is attained, we can evidence that the heat lost by the hot substance (metal) is gained by the cold substance (water) and we can write:

$Q_{metal}=-Q_{water}$

Which can be also written as:

$m_{metal}C_{metal}(T_{EQ}-T_{metal})=-m_{water}C_{water}(T_{EQ}-T_{water})$

Thus, since we need the specific heat of the metal, we solve for it as shown below:

$C_{metal}=\frac{m_{water}C_{water}(T_{EQ}-T_{water})}{-m_{metal}(T_{EQ}-T_{metal})} \\\\C_{metal}=\frac{250.0g*4.184\frac{J}{g\°C}(29.0\°C-98.0\°C)}{95.0g(29.0\°C-23.0\°C)} \\\\C_{metal}=126.6\frac{J}{g\°C}$

Best regards.

7 0

2 years ago

How does the average velocity of molecules in a high-temperature gas compare to the average velocity of molecules of the same ga

IrinaK [193]

Answer:lower temp molecules act slower so they come closer together and heated molecules are more spaced out that is why when you put an ice cube in a hot pan the ice melts and turns into a liquid due to heat the molecules space out

Explanation:

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2 years ago

What statement correctly describes protons?

Ludmilka [50]

Answer:

A positively charged subatomic particle

8 0

3 years ago