Can someone help me me please anyone

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.)

Which of the following volumes is the smallest? a) one microliter b)one deciliter d)one liter c)one milliliter

What is the volume in liters of 7500 g of helium atoms. assume stp conditions.