The graph shows that the reaction is at equilibrium after 60. seconds because the concentrations of both no2(g) and n2o4(g) are

(1) increasing
(2) decreasing
(3) constant
(4) zero

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?

What are four significant sources of ghgs that come from wostem washington?

Find the number of grams of hcl needed to react completely with .50 moles of magnesium.