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SCORPION-xisa [38]
3 years ago
10

Why does the atomic radius of elements get bigger as we go from top to bottom on the periodic table?

Chemistry
2 answers:
Lisa [10]3 years ago
8 0

Answer:

density changes

Explanation:

Dmitry [639]3 years ago
7 0

Answer:

Higher principal energy levels consist of orbitals which are larger in size than the orbitals from lower energy levels. The effect of the greater number of principal energy levels outweighs the increase in nuclear charge and so atomic radius increases down a group.

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Temperature is _____ to the average kinetic energy of a gas.
d1i1m1o1n [39]

Answer: Option (b) is the correct answer.

Explanation:

As on increasing the temperature, the molecules gain more kinetic energy due to which they tend to collide and move rapidly from one place to another.  

Thus, we can conclude that when temperature is increased, the kinetic energy of the molecules increases.

This means that temperature is directly proportional to the average kinetic energy of a gas.

8 0
3 years ago
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New nuclei and neutrons result from:
svet-max [94.6K]
I think the correct answer from the choices listed above is option C. New nuclei and neutrons result from <span>the splitting of an atom's nucleus. It is called nuclear fission where atoms are being split into smaller parts. Hope this answers the question. Have a nice day.</span>
3 0
3 years ago
A pale of sand and water
zhuklara [117]

Answer:

I have no idea what you mean.

Explanation:

6 0
3 years ago
What is acid, base, salt?​
netineya [11]

Answer:Acid ,Base ,Salt

Explanation:    An acid is defined as a substance whose water solution tastes sour, turns blue litmus red and neutralizes bases

A substance is called base if its aqueous solution tastes bitter, turns red litmus blue or neutralizes acids.

Salt is a neutral substance whose aqueous solution does not affect litmus.

 

<h3>Hope it will help u....</h3>
7 0
3 years ago
A 100-gram sample of material requires 1220 calories of heat energy to raise its temperature from 20 0C to 80 0C. What is the sp
SashulF [63]

Taking into account the definition of calorimetry, sensible heat and latent heat, the specific heat capacity of the material is 0.203 \frac{calories}{gC}.

<h3>Calorimetry</h3>

Calorimetry is the measurement and calculation of the amounts of heat exchanged by a body or a system.

Sensible heat is defined as the amount of heat that a body absorbs or releases without any changes in its physical state (phase change).

The amount of heat a body receives or transmits is determined by:

Q = c× m× ΔT

where Q is the heat exchanged by a body of mass m, made up of a specific heat substance c and where ΔT is the temperature variation.

<h3>Specific heat capacity of the material</h3>

In this case, you know:

  • Q= 1220 calories
  • c= ?
  • m= 100 g
  • ΔT=Tfinal - Tinitial= 80 C - 20 C= 60 C

Replacing in the definition of amount of heat:

1220 calories= c× 100 g× 60 C

Solving:

c= 1220 calories÷ (100 g× 60 C)

<u><em>c= 0.203 </em></u>\frac{calories}{gC}

Finally, the specific heat capacity of the material is 0.203 \frac{calories}{gC}.

Learn more about calorimetry:

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2 years ago
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