题目

Some houses are designed to be smart．Others have smart designs．An example of the second type of house won the Award of Excellence from the American Institute of Architects．        Located on the shore of Sullivan's Island off the coast of South Carolina, the award-winning cube-shaped beach house was built to replace one damaged by Hurricane Hugo years ago．In September 1989, Hugo struck South Carolina, killing 18 people and damaging or destroying 36,000 homes in the state．        Before Hugo, many new houses built along South Carolina's shoreline were poorly constructed, a15、酸、碱、盐溶解性表是学习化学的重要工具．右表列出了“部分酸、碱、盐在20℃时的溶解性”．利用此表完成以下任务：（1）查：Ba（OH）2的溶解性 溶于水（2）写出表中一种含氧酸与表中的一种盐溶液反应的化学方程式 H2SO4+BaCl2═BaSO4↓+2HCl．（3）工业生产和日常生活中燃烧煤时都有造成酸雨形成的二氧化硫产生．请你写出用上表中的某种溶液吸收二氧化硫的化学方程式 SO2+2NaOH═Na2SO3+H20．