2Mg(s) + 02 (8) → 2Mgo (s) If 21.2 kcals of energy is released by this reaction, how
many kJ of energy does the reaction release? (1 cal =

since you're a real machine, your ama is always less than your ima, because you can never totally eliminate friction.

the total distance that martina travels that day is

(distance from home to mom's office) plus (distance from mom's office to school)

plus (distance from school to library) plus (distance from library to friend's house)

plus (distance from friend's house to martina's house).

(we don't know what any of these distance actually is.)

find the surface area of the sphere to the nearest square unit. use a calculator.

a. 254 in.2

b. 64 in.2

c. 127 in.2

d. 1,018 in.2