Blood (assume u 4.5 x 105 lb. s/ft? , sg =1.0) flows through to its head at a rate of 2.5 x 104 ft/s. assume the artery length is 10 ft and the artery diameter is 0.20 in. if the pressure at the beginning of the artery (outlet of the heart) is equivalent to 0.70 ft hg (phg 26.3 slug/ft'), determine the pressure at the end of the artery when the head is 8 ft above the heart. an artery in the neck of a giraffe from its heart

catya your not at all which answer i've seen you do this on another question!

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