Mammals that live in the arctic ocean have a large amount of blubber, which is a fatty tissue just beneath the skin. which statement best relates why these animals have so much blubber?
lipids in blubber insulate the animals from cold water.
proteins in blubber the animals move to stay warm.
carbohydrates in blubber provide all the energy that the animals need to stay warm.
nucleic acids build the lipids in blubber, which keep animals warm by regulating cell activities.

the old alchemists made significant contributions to science even though there starting premises were off a bit. their conclusions after failure would steer them into better directions for investigation. science is no more than close observation and the initial mistakes result in rethinking and retrying experiments.

"you start with 15.67 g mgco3-xh2o, when heated and all the water is removed, you are left with 7.58 g mgco3 only.

therefore, you had 15.67 - 7.58 = 8.09g h2o  

moles of each :

7.58g mgco3 = ? moles = 7.58g / 83.4g/mole = 0.09moles  

8 09g h2o = ? moles = 8.09g / 18g/mole = 0.44moles  

molar ratio between the two by dividing both numbers by the smallest number :

0.09 / 0.09 = 1  

0.44 / 0.09 = 4.8  

mgco3-5h2o"