Astudent forgot to read the label on the jar carefully and put potassium chloride in the crucible instead of potassium chlorate. how would the results turn out

Answer : The mass of chemical species would remain the same. As potassium chloride does not contains oxygen in it.

The reaction that was supposed to be done would have turned to be opposite as reduction would occur instead of oxidation. Since, Potassium Chlorate is an oxidizing agent, and Potassium Chloride is a reducing agent, It is therefore assumed that if the student was trying to oxidize a particular species would undergo reduction instead.

The crucible when heated with potassium chloride in it would result in melting of the species.

the density of gold = 19.3 g/cm3

the relation between density and mass and volume is

density = mass / volume

given :

mass of gold = 13 g

density = 13g / volume = 19.3

volume = 13 /19.3 = 0.67 cm^3

thus volume of gold nugget = 0.67 cm^3