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Questions in chemistry

[Free] Compare and contrast an electric generator and a battery.

[Free] Why are some examples of a chemical reaction not actually foolproof evidence of a chemical reaction? Provide two examples to support the statement that commonly known signs of chemical reactions are not always foolproof evidence of a chemical reaction.

[Free] What are the sides of the DNA ladder made of?

[Free] What is the bond type and molecular polarity of PCl\(_3\)?