Time to put on your scientist’s hat and draw a conclusion based upon data in the Lattice Energy table. Compare the strength of the bonds in potassium bromide with the strength of the bonds in potassium oxide. State in terms of lattice energy which is stronger, and propose a sound explanation for this difference.

Work done = force ×distancebut force = mass ×gravityand gravity = 10m\s force = 2×10 = 20 work done = 20×3 = 60 joules

The correct answer is c

The independent variable is the type of music.the dependent variable is the pulse rate.the intervening variable is the age of the subject.if the mother does not like rock, her pulse is likely to not increase.the same might be true for the sister.the friend may like rap and gets excited.to establish cause/effect relationship, all of the subjects must be consistent.hope i .