Tower Company manufactures and sells a single product with a positive contribution margin. If the selling price and the variable cost per unit both increase 5% and fixed costs do not change, what is the effect on the contribution margin per unit and the contribution margin ratio? Contribution margin per unit Contribution margin ratio A. No change No change B. Increase Increase C. Increase No change D. Increase Decrease Option A Option B Option C Option D

no, the red giant is the hottest with 2.00.000.000 degrees celsius. while the white dwarf only 25,000 degrees celsius.

the correct answer to this question is 2

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