Look at this coconut tree. Let's estimate that it is about 15 feet high and weighs approximately 1500 lbs. The main substance this tree is composed of is cellulose (C6H12O6). , which is constructed through photosynthesis.

6 CO2 + 6 H2O --> C6H12O6 + 6 O2

0.04% of air is made of CO2 .

How many gallons of air at STP was necessary to build this tree from the ground up?

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

5.6⋅10−^19  j

do you need the explaination?