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3 years ago

Signs of a chemical change

Chemistry

2 answers:

dezoksy [38]3 years ago

5 0

Answer: There are five signs of chemical change

Color Change
Production of an odor
Change of Temperature
Evolution of Gas (bubbles start to form)
Precipitate (starts to form a solid)

When these signs start to form you know chemical change is at work.

Hope this helps :)

AnnZ [28]3 years ago

4 0

Some signs of a chemical change are a change in color and the formation of bubbles. The five conditions of chemical change: color chage, formation of a precipitate, formation of a gas, odor change, temperature change. Hope this helps!!

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strojnjashka [21]

Answer: The moles of hydrochloric acid is $1.0346\times 10^{-4}\mu mol$

Explanation:

To calculate the molarity of solution, we use the equation:

$\text{Molarity of the solution}=\frac{\text{Moles of solute}}{\text{Volume of solution (in L)}}$

Or,

$\text{Molarity of the solution}=\frac{\text{Micro moles of solute}\times 10^6}{\text{Volume of solution (in }\mu L)}}$

We are given:

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