Use the ratio form of Kepler’s third law, StartFraction T Subscript A Baseline over T Subscript B Baseline EndFraction Superscript 2 Baseline. = , and the data provided to determine the time it takes Mars to orbit the Sun. Round your answer to the nearest tenth. Earth’s orbital period = 1.0 Earth year

Earth’s distance from the Sun = 1.0 AU

Mars’s distance from the Sun = 1.5 AU

It takes Mars about
Earth years to orbit the Sun.

thats how its supposed to be

6.4 cm (max) - 25 cm (min)

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