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Rama09 [41]
3 years ago
12

Which subatomic particle has a negative charge?

Chemistry
2 answers:
Neporo4naja [7]3 years ago
7 0

(o゜▽゜)o☆ hello

1.a

2.c

3.d

4.b

100%

here are the answers    ˋ( ° ▽、° )

Daniel [21]3 years ago
4 0
The answer is 
b) electron
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This equation is not balanced. Click on the coefficient we should change first.<br> help ASAP
horrorfan [7]

Answer:  The coefficient we should change first is for NO_{3}.

Explanation:

The given reaction equation is as follows.

Al + Ni(NO_{3})_{2} \rightarrow Al(NO_{3})_{3} + Ni

Here, number of atoms present on reactant side are as follows.

  • Al = 1
  • Ni = 1
  • NO_{3} = 2

Number of atoms present on the product side are as follows.

  • Al = 1
  • Ni = 1
  • NO_{3} = 3

To balance this equation, multiply Al by 2 and NO_{3} by 3 on reactant side. Also, multiply Al(NO_{3})_{3} by 2 and Ni by 3 on the product side.

Hence, the equation can be rewritten as follows.

2Al + 3Ni(NO_{3})_{2} \rightarrow 2Al(NO_{3})_{3} + 3Ni

Now, number of atoms present on reactant side are as follows.

  • Al = 2
  • Ni = 3
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Number of atoms present on product side are as follows.

  • Al = 2
  • Ni = 3
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Since, the atoms on both reactant and product side are same. Hence, it is now a balanced chemical equation.

Thus, we can conclude that the coefficient we should change first is for NO_{3}.

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