A typical person has an average heart rate of 74.0 beats/min. Calculate the given questions. How many beats does she have in 8.0 years? How many beats in 8.00 years? And finally, how many beats in 8.000 years? Pay close attention to significant
figures in this question.
8.0 years:
3.1 x108
beats
beats
8.00 years:
beats
8.000 years:

hi,

the capital city of australia is canberra.

the answer is 0.42 is that is an option. this question provides no info

i believe the answer is three water molecules

chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances. these processes are called chemical reactions and, in general, are not reversible except by further chemical reactions. some reactions produce heat and are called exothermic reactions and others may require heat to enable the reaction to occur, which are called endothermic reactions. understanding chemical changes is a major part of the science of chemistry.