The density of silver is 10.49 g/mL. What is the volume of a 9.43-kg sample?

Can someone me with questions 12 and 13 plz.

Suppose you wanted to make 100 grams of water. what is the molar mass of water (h2o)?

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.)