This polar bear lives where it is very cold. Its skin is black and that helps absorb heat. The polar bear also has thick layers of fat called blubber. What is this blubber used for? A) It helps the polar bear swim in the ocean. B) It insulates and keeps the polar bear warm. C) Females use the fat to feed the baby polar bears. D) Only males have fat and it is used to attract a mate.

The lattice enthalpy (formation of ionic solid from ions in the gas phase) for agcl(s) is -916 kj/mol and the hydration enthalpy (dissolution of gaseous ions into water) is -850 kj/mol. how much heat (in joules) is involved in forming 1l of saturated agcl solution (1.8 × 10-4 g / 100 ml water) by dissolving agcl(s)? assume solution volume does not change much upon dissolution. the equations are given below. ag+(g) + cl−(g) æ agcl(s)