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lozanna [386]
2 years ago
11

What's similar about the valence electrons of Carbon and Silicon?

Chemistry
1 answer:
Mars2501 [29]2 years ago
5 0

Answer:

Explanation: Carbon and silicon BOTH come from Group 14 of the Periodic Table , i.e. both formally have the same number of valence electrons, 4 such electrons.........

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2H+ H- H+ n + energy
lbvjy [14]

from an external source of power

Explanation:

The energy needed for nuclear fusion comes from an external source of power.

Nuclear fusion is the combination of small sized atomic nuclei to form larger ones.

The reaction releases a huge amount of energy but also requires a large activation energy to start up.

  • The energy input require to drive two nuclei into fusion comes from an external source.
  • Nuclear fusion has a high activation energy which serves as the energy barrier for this reaction to take place.
  • The energy comes from the surrounding and once initiated, spontaneous chain reactions are set up.

learn more:

Nuclear reactions brainly.com/question/10094982

#learnwithBrainly

5 0
3 years ago
How many grams of KBr is required to prepare 100 mL of<br> 2.0 M KBr solution?
sesenic [268]

Answer:

23.8g

Explanation :

Convert 2.0M into mol using mol= concentration x volume

2.0M x 0.1L (convert 100mL to L since the units for M is mol/L)

= 0.2 mol

We can now find grams by using the molar mass of KBr

=119.023 g/mol (Found online) webqc.org

but can be be calculated by using the molecular weight of K and Br found on the periodic table

We can now calculate the grams by using grams=mol x molar mass

119.023g/mol x 0.2mol

= 23.8046 g

=23.8g (rounded to 1decimal place)

4 0
3 years ago
What is commonly used to run a central heating system?
Troyanec [42]
Answer :- Electrical energy

Explanation :-
Geothermal energy is too large scale
solar energy is inefficient
Nuclear does more harm
7 0
3 years ago
hi anyone able to explain Why does the temperature of a substance remain the same when it is boiling using kinetic particles the
Tpy6a [65]

Answer:

The temperature remains

Explanation:

The temperature of a boiling substance remains the same because the extra energy is used in phase transition, that is to break the bonds between the molecules that hold them close together in the liquid state. With increased energy the molecules gain enough kinetic energy to overcome inter-molecular   forces and change state from liquid to gas

4 0
3 years ago
Which substances can act as an arrhenius acid in aqueous solution
My name is Ann [436]
HI acts as an arrhenius acid in solution.  It will dissociate into H⁺ and I⁻ therefore being a proton donor.  (HI is actually one of the 7 strong acids)
I hope this helps.
8 0
3 years ago
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