1. Add arrows to the picture below to show how you think the scale will move if air DOES weigh something. Why do you think that?
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Well to my expert knowledge and my exquisite calculations i think the the negative ion # 412 is the key to sucess

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

Answerthe same as;