Evaluate this dimensional analysis setup. a paperclip is 3.2 cm long. how many paperclips would fit in

the length of a football field (100 yards) if 1 inch = 2.54 cm? be sure to show all steps in the conversion.

(ref: p.40-46)

100 yard = 9144 centimeters

9144 / 3.2 = 2,8575 round off

= 2,858 paperclips

Explanation:

2857

Explanation:

Converting the length of a football field to cm:

Calculating the number of paperclips:

So rounding down the answer is that 2857 paperclips would fit in the length of a football field.

answer: the enthalpy of the overall chemical reaction is +87.88 kj or +88 kj.

according to hess's law, the overall enthalpy of a reaction is the difference between the sum of enthalpy values of all the products and the sum of enthalpy values of all the reactants.

δh(reaction) = ∑nδh(products) - ∑nδh(reactants)

δh(reaction) = [δh +δh] - [δh]

δh(reaction) = [1(-287.02) + 1(0) ] - [1(-374.9)] kj = +87.88 kj

here, δh (pcl3) = -287.02 kj, δh(cl2) = 0, δh(pcl5) = -374.9 kj

therefore, enthalpy of the overall reaction is +87.88 kj or +88 kj.