At 1 atmosphere and 20 degrees Celsius, all samples of H₂0(l) must have the same density.
Ideal gas equation of gases gives idea about the behavior of gases at different conditions and it will be represented as:
PV = nRT, where
P = pressure
V = volume
n = moles
R = universal gas constant
T = temperature
After rearranging the equation, we get
P/RT = n/V
Quantities which are present on the left side all are constant and the value on the right side describes the density of the water.
Hence they must have same density.
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