Which of these peices off evidence did alfred wegners original theory of continental drift have access to? reversing paleomagnetism in rocks on the ocean floor a seafloor that was geologically active with earthquakes, volcanoes, and mountain chains seafloor spreading at mid-ocean ridges mountains in north america appearing to match up with mountains in northern europe

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