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Komok [63]
3 years ago
13

HELP PLEASE!! (100 points)

Chemistry
1 answer:
MrRa [10]3 years ago
3 0

Answer:

As you cool a matter to absolute zero, their kinetic energy reduces significantly and the molecules slows down and begins to aggregate together. ... As heat is added, the molecules gain more kinetic energy. This shown in their increase motion. When heat is withdrawn, the particles slows down hope this helped

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The main type of attractive forces between molecules of carbon tetrabromide (cbr4) are:_______
romanna [79]

Answer:

Vanderwaals forces

Explanation:

CBr4 is a nonpolar molecule, nonpolar molecules usually possess vanderwaals forces between their molecules as their main attractive force.

CBr4 is nonpolar because the tetrahedral arrangement of the C-Br bonds cancel out the individual dipole moments of each C-Br bond thereby making the compound nonpolar, hence the answer above.

8 0
3 years ago
Filtering air to remove dust and pollen is it chemical or physical change
Cerrena [4.2K]

Answer:

Physical Change

Explanation:

Because the filter is removeing the dust by having the air go though a thin material.

Hope it helps!

3 0
3 years ago
A cubic piece of metal measures 3.00 cm on each edge. If the metal is nickel, whose density is 8.90 g/cm3, what is the mass of t
blsea [12.9K]
V = 3.00 x 3.00 x 3.00 => 27 cm³

D = m / V

8.90 = m / 27

m = 8.90 x 27

m = 240.3 g 
5 0
3 years ago
When the ventricles contract, blood is pumped
pantera1 [17]

Answer:

it is a because blood is pumped but heart so the answer is A

4 0
2 years ago
A 10.0g sample of H2O(l) at 23.0degrees C absorbs 209 joules of heat. What is the final temp of the H2O(l) sample? Explain.
IRISSAK [1]

Answer:

Final temperature = 28.0 degrees C.

Explanation:

heat absorbed = mass * specific heat * rise in temperature.

The specific heat of water is 4.186 J /g/C so we have the equation

209 =  10 * 4.186 * x   where x is the temperature increase

41.86x = 209

= 5 degrees C.

7 0
3 years ago
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