How many molecules of water are in 345g

There are molecules of water are in 345 grams.

Explanation:

Where:

m = mass of compound

M = Molar mass of compound

N = Number of particles / atoms/ molecules

n = Number of moles

= Avogadro's number

Mass of water = m =  345 g

Molar mas of water = M = 18 g/mol

Number of molecules of water = N

There are molecules of water are in 345 grams.

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.

58750.08068 is the answer i think