Create a single spreadsheet to perform the following unit conversions, taking a value in u. s. customary units as the input and returning the value converted to si units: a. feet to meters b. pounds per square inch (psi) to newtons per square meter (pascals) c. horsepower to watts d. u. s. gallons to cubic meters use comments in your cells to cite the reference used to determine the unit conversion values.

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.

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explanation:

diaria maybe go see a doctor about that