How many moles of KCI would be dissolved in 4 L of water to make a 2 M solution?

Which produce would best increase the amount of heat energy that is actually gained by calorimeter b

650.j is the same amount of energy as? 2720cal1550cal650.cal2.72cal

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.)