Which of the following is a difference between a law and a theory? -A theory explains a scientific phenomenon whereas a law describes a natural process.
-A law is based on observations whereas a theory is not.
-A law can change based on new evidence whereas a theory does not.
-A law explains a natural process whereas a theory describes a natural process.

Explanation:

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the primary difference between a scientific theory and a scientific law is that a law explains why some physical phenomenon behave as they do allows scientists to predict how physical phenomenon will behave has been heavily tested through repeated experimentation is a scientific model

the difference between a scientific law and a scientific theory is a law has been proven while a theory has not

a scientific law is differ from theory

the ideal gas law equation is as follows

pv = nrt

where p - pressure

v - volume

n - number of moles

r - universal gas constant

t - temperature

so if the pressure, volume and temperature are already known

we are left with n and r

since r is the universal gas constant that has a known fixed value then r too is known

so we are left with 'n'

once we know temperature volume and pressure

we can find the number of moles of gas present using the ideal gas law equation

this is not my own answer, this is an answer for the same question by the user blahblahmali. i do not claim ownership of this account.

lol for the pointsss