Explain the term lattice energy as applied to ionic solids

Which step in naming unsaturated hydrocarbons is used for alkenes but not alkynes

In 2002, the rare earth elements mine in mountain pass, california was closed because

An animal cell loses the ability to convert energy stored in food to energy that the cell can use. which of the cell's organelles has stopped working? a.the mitochondria b.the nucleus c.the vacuoles d.the endoplasmic reticulum