A140.5 g sample of niso4•xh2o was heated until no further mass decrease was noted. the remaining sample was assumed to be anhydrous niso4 with a mass of 77.5 g. first determine the moles of anhydrous nisoâ­4 and moles of h2o lost. what is the mole ratio of niso4 to water

ደጀድከቸጀረከረገፐ4ከነገረምመፈለረከጎቸከረከ3ክአከ ረከቸቸከ3መ መ ከረቸከከ. 3ከቸከ ገ

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.