What do scientists generally do if they are not sure what the expected value of a measurement should be? a. use their best estimate for the true value b. stop the experiment and measure something else c. take the expected value from a different experiment d. decide not to measure the accuracy of the experiment

100 grams of molten lead (600°c) is used to make musket balls. if the lead shot is allowed to cool to room temperature (21°c), what is the change in entropy (in j/k) of the lead? (for the specific heat of molten and solid lead use 1.29 j/g⋅°c; the latent heat of fusion and the melting point of lead are 2.45 × 104 j/kg and 327°c, respectively.)