Atypical person has an average heart rate of 75.0 beats/min. calculate the following a)how many beats does she have in 7.0 years? b) how many beats in 7.000 years? pay close attention to significant figures in this question.

a) Beats in 7.0 years =

b) Beats in 7.000 yrs=

Explanation:

Step 1

Calculation of no. of min. in 7 year

Days in a year = 365

Hrs in a day = 24

Min. in a 1 hr = 60

Min. in a day = 60 × 24

Min. in a year = 60 × 24 × 365

Min. in 7 years

               = 60 × 24 × 365 × 7

               = 3679200 min.

a) Beats in 7.0 years

Heart rate = 75.0 beats/min.

Beats in 7.0 yrs

             = 75.0 × 3679200

             = 275940000 beats

No. of significant figure = 2

Answer has to be reported in 2 significant digits.

Beats in 7.0 years =

a) Beats in 7.000 years

Beats in 7.000 yrs = 275940000 beats

No. of significant figure in 7.000 = 4

Answer has to be reported in 4 significant figures

So, no. of beats in 7.000 yrs=

the answer to your question is c

a. energy is absorbed in the reaction.

if in a given reaction the energy of products is greater than the energy of reactants it means that reaction is endothermic and during the reaction, the energy is absorbed by reactants. in an endothermic reaction, the products have more stored chemical energy than the reactants. and in this reaction the reactants are more stable than products before the compounds with less energy are always more stable.