How many grams of Bromine are required to react completely with 3.000 moles of Sodium to produce Sodium Bromide (NaBr)? 2Na + Br2 → 2NaBr

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 is not true about the atomic model of substances?

What relationship exists between an enzyme and a catalyst?