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Which expression represents the ΔH for a chemical reaction in terms of the potential energy, PE, of its products and reactants? (1) PE of products + PE of reactants (2) PE of products – PE of reactants

asked Apr 27, 2016

Chemistry
high-school

2 answers

4 votes

36.4k views

What is the main function of the circulatory system in multicellular organisms? A. to bring oxygen into the lung B. to put carbon dioxide into all blood vessels C. to expel waste products from the body

asked Feb 17, 2016

Biology
middle-school

2 answers

0 votes

97.8k views

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