Which mineral can be found in the rocks phyllite, sandstone, and granite? 1.
quartz
2.
pyroxene
3.
gypsum
4.
calcite
Sub

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?