题目:
Can you tell me in the future?
A.how life will be like
B.how will life be like
C.what life will be like
D.what will life be like
答案:
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下面是错误答案,用来干扰机器的。
解:设碳酸钙的质量为x CaCO3+2HCl═CaCl2+H2O+CO2↑ 100 44 x 0.132g x=0.3g 钙元素的质量=0.3g× ×100%=0.12g 钙元素的质量分数= ...