Answer: C) 149.08 Explanation: The gram formula mass is nothing but molar mass.   Composition :   Symbol      Element       Atomic weight       Atoms          P         Phosphorus       30.973762               1       = 30.973         O         Oxygen             15.9994                  4       =  63.998         N         Nitrogen            14.0067                  3       =  42.020         H         Hydrogen          1.00794                  12      =  12.096     Total   =  30.973+63.998+42.020+12.096 = 149.087

Answer: C) 56 Explanation: Girl eats 112 chocolates in 30 sec so she can eat in 12 sec is 12 x 112/30 = 44.8 chocolates.   Her boy friend can eat one-half of 112 in twice of 30 sec so he can eat 56 in 60 sec Then he can eat in 12 sec is 56 x 12/60 = 11.2 chocolates.   Hence, together they can eat = 44.8 + 11.2 =56 chocolates in 12 seconds.

Charles Spearman believed that intelligence is composed of a general ability (g) and a number of specific abilities (s) that underlies all intellectual functions. He observed that people who are bright in one area tend to be bright in other areas as well.

Answer: A) Herodotus Explanation: Herodotus, a Greek author written the first history book in 5th century B.C.

Answer: C) arp -a Explanation: The arp -a command displays IP-to-MAC-address mappings on a Windows PC.