Potassium dichromate is an oxidizing agent. The oxidation number of chromium in potassium dichromate is +6. ai. name one compound which can be oxidised by potassium dichromate

aii. state the condition(s) under which the compound reacts with potassium
dichromate

aiii. what product is formed from the compound in the redox reaction?

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.)