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KatRina [158]
2 years ago
15

Compare and contrast the mass of the object to the size of the object.

Chemistry
1 answer:
TiliK225 [7]2 years ago
5 0
Mass is the amount of matter an object contains, while volume is how much space it takes up. Take a basketball and a bowling ball, their about the same size but the bowling ball is heavier because it contains more matter.
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In atomic solids where the lattice points are occupied by Group 8 ( 18) atoms, the atoms are held together by __________ forces.
shtirl [24]

Answer:

London dispersion forces

Explanation:

There are different forces of attraction that helps to hold atoms or Molecules of a particular substance together. Some of the forces of attraction are ionic/ electrovalent bond, covalent bond, vander waals forces of attraction and so on.

Under the vander waals forces of attraction we have what is known as the London dispersion forces. This force of attraction is a very weak and it is commonly found in the atoms of noble gases.

The intermolecular force of attraction in which we are talking about that is london dispersion forces is formed as a result of the formation of non-polar dipoles which are not permanent.

8 0
2 years ago
How can a chemical reaction be sped up?Select from the drop-down menu to correctly complete the statement.
lakkis [162]

Answer:

A) Concentration

Explanation:

When you add a chemical to itself it becomes more concentrated making it more powerful and faster

3 0
2 years ago
Read 2 more answers
Two seventh grade students are studying how sound waves are transferring energy.
garik1379 [7]

Answer:

Hit the pot faster at a higher frequency

Explanation:

I feel like it would be because it makes more sense to me but I really have no clue tbh

6 0
2 years ago
An aqueous solution has a normal boiling point of 103.0°
torisob [31]
About 5 degrees  that is

3 0
3 years ago
Write the Henderson-Hasselbalch equation for a propanoic acid solution ( CH3CH2CO2H , pKa=4.874 ) using the symbols HA and A− ,
zysi [14]

Answer:

a) [A⁻]/[HA] = 0.227

b) [A⁻]/[HA] = 0.991

c) [A⁻]/[HA] = 2.667

Explanation:

In the Henderson-Hasselbalch equation, HA stands from an acid an A⁻ stands from its conjugate base, as follows:

  • CH₃CH₂CO₂H = HA
  • CH₃CH₂CO₂⁻ = A⁻

pH = pka + Log [A⁻]/[HA]

pH = 4.874 + Log[CH₃CH₂CO₂⁻]/[CH₃CH₂CO₂H]

  • (a)

4.23 = 4.874 + Log [A⁻]/[HA]

-0.644 = Log [A⁻]/[HA]

10^{-0.644} = [A⁻]/[HA]

0.227 = [A⁻]/[HA]

  • (b)

4.87 = 4.874 + Log [A⁻]/[HA]

-0.004 = Log [A⁻]/[HA]

10^{-0.004} = [A⁻]/[HA]

0.991 = [A⁻]/[HA]

  • (c)

5.30 = 4.874 + Log [A⁻]/[HA]

0.426 = Log [A⁻]/[HA]

10^{0.426} = [A⁻]/[HA]

2.667 = [A⁻]/[HA]

6 0
3 years ago
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