#1: A chemical reaction gives off 1,500 kJ of heat energy. About how many calories is this? (1 calorie = 4.18 Joules)

A. 3.6 x 10^2 calories

B. 3.6 x 10^3 calories

C. 3.6 x 10^4 calories

D. 3.6 x 10^5 calories

Question

#1: A chemical reaction gives off 1,500 kJ of heat energy. About how many calories is this? (1 calorie = 4.18 Joules)

A.       3.6 x 10^2 calories

B.       3.6 x 10^3 calories

C.      3.6 x 10^4 calories

D.      3.6 x 10^5 calories<
**Idk how to solve :(

anonymous · Answer

#2: On a graph of mass vs. volume, which of the following indicates the density of the substance?

A.       slope 

 B.      origin 

 C.      x-axis

 D.      y-axis
**My answer: A. slope

is that correct??? idk :/

aaronq · Answer

it's just a conversion 1 kJ =1000 J
so you have 1500 kJ = how many J

aaronq · Answer

yes the slope, remember how slope can be defined  as |dw:1350789954081:dw|