Which of the following explains the conservation of mass during cellular respiration the total number of atoms one carbon dioxide and or oxygen react stays the same when glucose some water or produce the total number of atoms one water in oxygen react stays the same and glucose and water our produce the total number of atoms and carbon dioxide and water rack stays the same and glucose and oxygen are produced the total number of items one glucose and oxygen react stays the same and carbon dioxide and water are produced

it is a solid

explanation:

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