Aburning candle is covered by a jar as shown in the picture. the whole arrangement has a mass of 500 g. what will be the approximate mass of the arrangement when the candle is completely burnt, after four minutes?
a)
0 g
b)
50 g
c)
250 g
d)
500 g

12 drag each label to the correct category. decide whether each statement describes mass or weight. measured in newtons measured in kilograms does not change when gravity changes === a gravitational force changes when gravity changes the amount of matter in something mass weight

If 21.2 kcals of energy is released by this reaction, how many kj does the reaction release? (1 cal 4.184 j)

What are atoms of the same element with varying number of neutrons