A solution at pH 7.0 contains Cu2+and NH3.Use the information in Tables 9.3 and 9.4.a. What is the ratio of {CuOH+}/{Cu2+}?b. What is the ratio of {NH4+}/{NH3}?c. If {NH4+} = 10-3.0, which Cu(NH3)x2+complex will be present at the greatest concentration?

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?