How is the AHfusion used to calculate the energy released when a mass of liquid freezes?
A. Grams liquid x mol/g < 1/AHfusion
B. Grams liquid < 1/ A Hfusion
C. Grams liquid x mol/g < AHfusion
D. Grams liquid AHfusion

Asolid that forms and separates from a liquid mixture is called

Nebulae are enormous clouds in outer space. they are made mostly of hydrogen gas, helium gas, and dust. some nebulae glow brightly, while others do not. the stars that people see are huge, bright balls of glowing gas. they are made mostly of hydrogen and helium. which statement correctly describes other ways in which nebulae and stars are different? a. stars can form inside a nebula but a nebula can never be produced by any star. b. a star always has a higher density than a nebula. c. stars can never form inside a nebula but a nebula can be produced by any star. d. a nebula always has a higher density than a star.

Select the word from the list that best fits the definition the nuclear family into which a person is born or adopted.