1.6A A landowner wants to spray herbicide on a field that has an area of 2050 m². The herbicide comes in bottles that hold 16 fluid ounces (fl oz), and 1.5 fl oz mixed with 1 gal
of water will treat 300 ft?. How many bottles of herbicide will the landowner need? Draw a
road map to show how you planned the solution.
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1,171 fluid ounces of herbicide is sufficient for 2050 square meter.

Explanation:

If 300 square feet of land is sprayed by the herbicide at the rate of 16 liquid ounce, So 1,171 fluid ounces of herbicide is enough to cover the area of 2050 square meters.

Calculation:

First convert 300 square feet into meter which is equal to 28 square meter.

16 ounces of herbicide = 28 square meter

x ounces of herbicide = 1050 square meter

by cross multiplication we get

28 x = 16 x 1050

x = 32800/ 28

x = 1171 ounces of herbicide.

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.

plasma is the state of matter where the substance is ionized and has no definite shape or volume. the fact of being ionized makes the substance a good electrical conductor.