Help please asap I'm super lost

Physics

2 answers:

vaieri [72.5K]2 years ago

6 0

A compound is two or more elements combinded together.
A element is a pure substance.
it looks like all of them are compounds except the carbon dixode, My teacher would accept that as a anwser idk bout urs thoughs.

Solnce55 [7]2 years ago

5 0

Element is the purest substance found in the simple form whereas Compounds are made up of two or more elements.

Hydrogen, Helium, Lithium or anything which you find in the periodic table is considered as an "Element" and every product made u of them like Carbon dioxide, Water, Ethane, Butanoic acid....everything is a kind of Compound (Can be classified into other higher groups but still considers a compound)

Hope this helps!

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Paul [167]

Explanation:

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(a). We need to calculate the amount of work done on the water