Assign oxidation numbers to substances in the three-step production of sulfuric acid to show which reactions are redox and which are not. S (s) + O2 (g) → SO2 (g)

SO2 (g) + O2 (g) → SO3 (g)

SO3 (g) + H2O (l) → H2SO4 (l)

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.)

Chlorophyll a had the molecular formula c55h72mgn4o5 how many atoms are in this molecule

Liquid from a brewery fermentation contains 10% ethanol and 90% water. part of the fermentation product (50,000 kg/h) is pumped to a distillation column on the factory site. under current operating conditions, a distillate of 45% ethanol and 55% water is produced from the top of the column at a rate of one-tenth that of the feed. what is the composition of the waste "bottoms" from the still?