Use the image below to answer the following questions there are three types of heat transfer occurring in the picture below. write a sentence about where each is occurring. (total three complete sentences in your own words.) on a very cold day, if you place your hand towards the bottom of a window, you can feel the convection of cold air as the cold, dense air sinks. try it out. did you feel the convection? it's a marshmallow on a metal stick over fire

all eukaryotic cell have mitochondria : )

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