Asubstance, x, has the following properties. (size of mass is 250. g.) specific heat capacities δhvap 20. kj/mol c(s) 3.0 j/g·°c δhfus 5.0 kj/mol c(l) 2.5 j/g·°c bp 75°c c(g) 1.0 j/g·°c mp −15°c calculate the energy that must be removed to convert substance x from a gas at 107°c to a solid -54.3°c. assume x has a molar mass of 75.0 g/mol.

Monkeys and bats have similar bone structure in their forelimbs. however, monkeys have longer forelimbs to use for climbing and swinging in trees. bats have shorter forelimbs to use for flight. which term best describes how monkey and bat forelimbs are related to each other? a. homologous b. embryonic c. analogous d. vestigial

Each of the following compounds contains a metal that can exhibit more than one ionic charge. provide systematic names for each of these compounds. (a) cr(clo3)6 (b) mo(cn)6 (c) cr2(so3)3 (d) v(clo2)2 (e) v(cn)5 (f) os(clo2)4

In a ni-cd battery, a fully charged cell is composed of nickelic hydroxide. nickel is an element that has multiple oxidation states. assume the following proportions of the states: nickel charge proportions found 0 0.17 +2 0.3 +3 0.33 +4 0.5 (a) determine the mean of the nickel charge. enter the answer to 2 decimal places.(b) determine the cumulative distribution function of nickel charge.