The variation in the density of water, p , with temperature, T, in the range 20oC ≤ T ≤ 50oC, is given in the following table.
Use these data to determine an empirical equation of the form p= c1 + c2T + c3T2 which can be used to predict the density over the range indicated. Compare the predicted values with the data given. What is the density of water at 42.1oC?