How much heat (in kJ) is released when 1.65 mol NaOH * (s) Is dissolved in water? (The molar heat of solution of NaOH is -445.1 kJ/mol. )

What is the mass of 0.46 mol of mgcl2

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.)

Light waves travel than sound waves.