Aballoon is inflated to a volume of 5.00 x 102 ml at 22.0 0c. the balloon is then cooled at constant pressure to 0.500 x 102 k. what is the final volume of the balloon?

 The  final  volume  of the balloon  is  84.75  ml

calculation

 The  volume is calculated using Charles   law formula

that is V1/T1= V2/T2  where,

V1=  5.00 x10^2  ml

T1= 22.0 °c   into kelvin = 22 + 273 = 295 K

V2= ? ml

T2 =0.500 x 10^2 K

make  V2 the  subject  of  the formula by multiplying both side  by T2

V2 is therefore = T2V1/T1

V2 = (0.500 x 10^2 K  x 5.00 x10^2 ml) / 295 K = 84.75 ml

answer : a model is often used to explain and make things easier to understand when any scientific topic needs to be demonstrated and explained.

as in this case where a scientist wants to use a model to present the results of his detailed scientific investigation. he should do it as it will him to make the audience understand the concept in a much better way. also, it can be changed according to new scientific understandings.