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lyudmila [28]
3 years ago
12

I just need some help getting the answers for this portfolio, but if someone could not only give the answers, but also explain h

ow to get those answers so I better understand how to do this myself... It would be greatly appreciated.

Chemistry
1 answer:
vova2212 [387]3 years ago
8 0

Answer:

The balanced chemical reaction has equal number of atoms in reactant side as well as product side.

Explanation:

The balanced chemical reactions is as follows.

1.

Zn+2HCl\rightarrow ZnCl_{2}+H_{2}

2.

4Fe+3O_{2}\rightarrow 2Fe_{2}O_{3}

3.

2H_{2}O_{2}\rightarrow 2H_{2}O +O_{2}

4.

NaHCO_{3}+HC_{2}H_{3}O_{2} \rightarrow NaC_{2}H_{3}O_{2}+H_{2}CO_{3}

H_{2}CO_{3}\rightarrow H_{2}O+CO_{2}

NaHCO_{3}+HC_{2}H_{3}O_{2}\rightarrow H_{2}O+CO_{2}+NaC_{2}H_{3}O_{2}

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5 0
3 years ago
Can you show me the answer and explain?
Hitman42 [59]

Answer:

C

Explanation:

looking at a periodic table X is fluorine and Y is potassium

Fluorine is in group 7 and forms a 1- charge (which gains electrons) and potassium is in group 1 and forms a 1+ charge (which loses electrons)

Fluorine (X) has an electronic structure of 2,7 and needs to gain an electron from Potassium (Y) to have a full outer shell and potassium has an electronic structure of 2,8,8,1 so needs to lose an electron to have a full outer shell as well. This means that the electron that potassium (Y) has lost is given away to fluorine (X), so both elements become stable.

This is known as ionic bonding where metals (like potassium) lose electrons and non-metals (like fluorine) gain electrons to become more stable, forming ions

Any further clarification let me know

6 0
2 years ago
Which one is you fav one
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the 3rd one

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8 0
2 years ago
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What is a hot spot?<br> Own words
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Explanation: MY own word's.

6 0
3 years ago
Ba(OH)2 Ba+2 + 2 OH- (dissolved in solution). Which will NOT happen to the equilibrium of this solution as H+ ions are added? H+
prohojiy [21]

Answer:

The reaction will move to the left.

Explanation:

  • For the reaction:

<em>Ba(OH)₂ = Ba²⁺ + 2OH⁻,</em>

<em>Ba(OH)₂ is dissociated to Ba²⁺ and 2OH⁻.</em>

  • If H⁺ ions are added to the equilibrium:

H⁺ will combine with OH⁻ to form water.

<em>So, the concentration of OH⁻ will decrease and the equilibrium is disturbed.</em>

<em />

<em>According to Le Châtelier's principle: </em>when there is an dynamic equilibrium, and this equilibrium is disturbed by an external factor, the equilibrium will be shifted in the direction that can cancel the effect of the external factor to reattain the equilibrium.

  • So, the reaction will move to the right to suppress the effect of decreasing OH⁻ concentration.

  • The base will dissociate to form more OH⁻ and thus, the quantity of Ba(OH)₂ will decrease.

<em>So, the right choice is: the reaction will move to the left, is the choice that will not happen to the equilibrium.</em>

5 0
3 years ago
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