23857
Rate constants for the four important reaction channels at 1 atm ( in cm3mol - 1s - 1 ) are : kR5 = 2 . 67 x 1015 x T - 1 . 32 exp ( - 16637 / T ) kR10 = 1 . 62 x 108 x T 0 . 57 exp ( - 13142 / T ) kR13 = 2 . 29 x 1017 x T - 1 . 66 exp ( - 18169 / T ) kR15 = 6 . 17 x 10 - 2 x T 3 . 35 exp ( - 10136 / T ) A comparison of the total rate constants for the addition of HO2 radical to EMK and that for H - atom abstraction by HO2 radical from EMK has also been carried out .
 Chemical: HO2; Chemical: EMK; Chemical: H; Chemical: HO2; Chemical: EMK
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: HO2; Chemical: EMK; Chemical: H; Chemical: HO2; Chemical: EMK