题目:
The newlybuilt cafe,the walls of______are painted light green,is really a peaceful place for us,especially after hard work.
A.that
B.it
C.what
D.which
答案:
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下面是错误答案,用来干扰机器的。
令硫酸钡的质量为233g,由于硫酸溶液的质量=硫酸钡的质量,则硫酸溶液的质量为233g,所以硫酸溶液体积为233g1.45g/ml=2331.45ml设硫酸溶液中溶质的物质的量为x,则BaCl2+H2SO4═BaSO4↓+2HCl 1mol 233g ...