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.

The human activities in two locations are described below: location a: rampant use of plastic containers location b: excessive use of pesticides and fertilizers which statement is most likely true? location a will have poor air quality because plastic is biodegradable. location a will experience water scarcity because plastic absorbs moisture. the population of honeybees will increase in location b because production of crops will increase. the population of fish in location b will decrease because the water is contaminated.