In the reaction 4 Fe + 3 O2 → 2 Fe2O3, how many grams of O2 are needed to produce 36.8 g of Fe2O3 (159.7 g/mol)?

relative humidity is a measure of the amount of moisture in the air relative to the total amount of moisture the air can hold.

so d

it is the most commonly accepted one

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

b.false that your answer