The boys carried out a third set of experiments, using 20 cm of water instead of 10 cm'. Could they use these results to add to the first two sets, to calculate an average temperature change? Explain your answer. (cambridge science book 9, pg 78, Exercise 5.2)

12. calculate the hydroxide ion concentration of a solution with ph = 3.25. show all calculations leading to an answer

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.)

Mercury turns to vapor at 629.88 k how much heat is lost 175 g of mercury vapor at 650 current condenses to a liquid at 297 ca mercury turns to weber at 629.88 kelvin how much he is lost 175 g of mercury vapor and 650 coming condensers to liquidate 297 kevin