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PSYCHO15rus [73]
3 years ago
15

Which is a chemical change?

Chemistry
2 answers:
Veseljchak [2.6K]3 years ago
8 0
I believe the a is the correct answer is d
Nonamiya [84]3 years ago
3 0
Here is your answer:

Your answer will be A "ice melting"!

Reason: A chemical change is a change where a object changes form such as Ice melting because the ice is changing from a Solid to a liquid.

Another Example is iron rusting its changes form!

Your answer is A!

Hope this Helps!
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Which of the following equations of CH4 + Cl2
mylen [45]

Balanced equation : C. CH₄ + 4Cl₂⇒  CCl₄+ 4HCl

<h3>Further explanation  </h3>

Equalization of chemical reactions can be done using variables. Steps in equalizing the reaction equation:  

1. gives a coefficient on substances involved in the equation of reaction such as a, b, or c, etc.  

2. make an equation based on the similarity of the number of atoms where the number of atoms = coefficient × index (subscript) between reactant and product  

3. Select the coefficient of the substance with the most complex chemical formula equal to 1  

Reaction

CH₄ + Cl₂⇒  CCl₄+ HCl

  • Give coefficient :

aCH₄ + bCl₂⇒  CCl₄+ cHCl

  • Make equation :

C, left=a, right=1⇒a=1

H, left=4a, right=c⇒4a=c⇒4.1=c⇒c=4

Cl, left=2b, right=4+c⇒2b=4+c⇒2b=4+4⇒2b=8⇒b=4

The equation becomes :

CH₄ + 4Cl₂⇒  CCl₄+ 4HCl

3 0
3 years ago
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