For a chemical reaction \[{{t}_{1/2}}\] is 2.5 hours at room temperatu – McqOptions

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1.	For a chemical reaction \[{{t}_{1/2}}\] is 2.5 hours at room temperature. How much of the reactant will be left after 7.5 hours if initial weight of reactant was 160g?
A.	10 g
B.	40 g
C.	80 g
D.	20 g
Answer» E.

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