what is the volume of a salt crystal measuring 5.44 x 10^-2 m, by 2.5 x 10^-3 m, by 7.9 x 10^-3 m?
explain how you got your answer.
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The answer to your question is: Volume = 1.074 x 10⁻⁶ m³

Explanation:

Data

Salt crystal measures 5.44 x 10⁻² m ;  2.5 x 10⁻³ m;  7.9 x 10⁻³ m

From the information I suppose it is a cube, then,

Volume of a cube = length x width x height

Volume = 5.44 x 10⁻² m x  2.5 x 10⁻³ m x 7.9 x 10⁻³ m

Volume = 0.000001074 m³

Volume = 1.074 x 10⁻⁶ m³

answer is: c. the experiment shows that the red substance experienced a chemical change.

this is chemical change (chemical reaction), because two new substances are formed (metalig liquid and gas), the atoms are rearranged and the reaction is followed by an energy change.

this is example of chemical decomposition.

chemical decomposition (analysis) is the separation of a single chemical compound into its two or more elemental parts or to simpler compounds.  

chemical decomposition is opposite of chemical synthesis.

b is the correct answer

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