题目

―I’m going to be your adviser this year, Linda. ―  61   ―Where is your new schedule（课程表）?―Here it is.―   62   ―I enjoy all the science courses.―   63   ―The lab work isn’t any problem for me. ―What are you planning to be?―I want to be a chemist. ―   64   ―No, I want to do research. ―Well, it’s a heavy schedule, but I’m going to approve（同意）it.    65   ―Oh, thank you! I’m really going to work hard this year, too. A. Our classes are conducted in lots of different places.B. Are you going to teach?C. What time do you want 将Na2CO3和NaHCO3固体混合物29.6g溶于水，加入1.00mol/L 盐酸600ml，反应完全后可以生成6.72LCO2（标况下）．已知盐酸过量，求（1）混合物中Na2CO3的质量？（2）若在上述原溶液中加入1.00mol/L 盐酸400ml，反应完全后，在标准状况下可生成CO2的体积？