Give one advantage and one disadvantage of recycling the materials from this type of ballpoint pen

The advantage is that you will be able to re-use that ballpoint pen in another manner. It could be a toy and such. The only disadvantage that it is really hard to transform the parts of the ball pen especially it has ink and the like. You can't recycle the ink for another purpose.

Hope the image of the frequency formula

Hbr dissociates to form h+ and br-ca(oh)2 dissociates to form ca2+ and 2oh-the h+ and oh- react to form waterassuming the reactants are dissolved in water, the net reaction is h+ + oh- —> h2oif you’re asked to show all components of the reaction, the complete reaction is 2hbr + ca(oh)2 —> cabr2 + 2h2o