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Makovka662 [10]
3 years ago
6

What are observations that indicate a chemical change has occurred ?

Chemistry
1 answer:
sukhopar [10]3 years ago
4 0

Answer:

Change of odor

Change of color

Change in temperature

Change in energy

Change of composition

Formation of gases

The decomposition of organic matter

The Change is irreversible

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Answer:

1.1 × 10⁻⁴ M

Explanation:

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7.7 \times 10^{-3} gAgCl.\frac{1molAgCl}{143.32gAgCl} .\frac{1molCuCl_{2}}{2molAgCl} =2.7 \times 10^{-5}molCuCl_{2}

The molarity of CuCl₂ is:

M=\frac{2.7 \times 10^{-5}molCuCl_{2}}{0.250L} =1.1\times 10^{-4} M

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2 years ago
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Answer:

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