pure aluminum (Al) can be produced starting from different types of minerals through a two-step process of refining. Two of the minerals that can be used as starting materials are gibbsite, Al(OH)3, and kaolinite, Al2Si2O6H. Which would allow you to produce more aluminum, 6 g of gibbsite or 6 g of kaolinite?

can you list the answers so i can answer

i think that the answer is c

answer : third trial had the contaminated sample and the correct value for dhrxn should be 1000 kj/mol

explanation :

let us write down the given equations

equation 1 :

equation 2 :

equation 3 :

let us use hess's law to find out which 2 equations can be added to get the third equation.

let us reverse equation 2 and multiply it by 2. the new equation that we get is,

equation 4 :

let us add equation 1 & 4

the above equation is similar to equation 3 but has different value for dhrxn.

therefore third trial had the contaminated sample and the correct value for dhrxn should be 1000 kj/mol