Which of the following is not a method in which crystals form? a) crystallization b)decrystallization c)water evaporation from a solution d)cooling of magma or lava

Sally is making a model of a magnesium atom with an atomic mass number of 24 for her chemistry class. she has foam balls for the protons, neutrons, and electrons. she has added 6 neutrons to her model so far. how many more neutrons does she need to add to complete her neutral atom of magnesium?

Using the thermodynamic information in the aleks data tab, calculate the standard reaction free energy of the following chemical reaction: →+p4o10s6h2ol4h3po4s round your answer to zero decimal places.

Describe at least two advantages and two disadvantages of using hydropower as a source of energy.