Triangle pqr has vertices at p(−6,−4) , q(2,−10) , and r(8,0) . it is dilated about the origin by a scale factor of 5 to obtain triangle p′q′r′ . what are the coordinates of the vertices of triangle p′q′r′ ? use the drop-down menus to choose the coordinates that make the statement true.

P'(-30, -20), Q'(10, -50), R'(40, 0)

Explanation:

Multiply each coordinate by 5 to get your above answer.

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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