1.

The reaction \[L\xrightarrow{{}}M\] is started with 10.0 g of L. After 30 and 90 minutes 5.0 g and 1.25 g of L respectively are left. The order of the reaction is

A. 0                                 
B. 1    
C. 2                                 
D. 3
Answer» C. 2                                 


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