Https://www. teachengineering. org/content/wst_/activities/wst_env ironmental/wst_environmental_lesson 02_activity3_worksheet_v2_tedl_dwc. pdf Answer of this worksheet needed

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

Ithink carbon dioxide, i am not completely sure.tell me if i am wrong.

Answerit is not a renewable energy source;

100cm, because 11.0 cm is 3 figures as they've chosen to include the decimal point. if you have a 3 digit number then anything after the second digit will become 0 if it's to 2 significant figures