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【简答题】
将铜片、锌片和250mL稀硫酸组成原电池,当在铜片上放出6.72L(标准状况下)的气体时,H 2 S0 4 恰好反应完全。 (1)写出该原电池的负极反应式。 (2)硫 酸的物质的量浓度是多少mol·L -1 ? (3)列式计算锌片减少 的质量。
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反馈参考答案：
举一反三
【单选题】Which statement is NOT true about the benefits of the S-T-P process?
A.
The S-T-P process helps a company match its products with its customers.
B.
The S-T-P process helps marketers arrange the importance of different offers from a company.
C.
The S-T-P process guides marketers to develop and deliver personalized and relevant messages to different audiences.
D.
The S-T-P process guides a company to divide its customers into small groups.
【多选题】which of the following should not be included in statement of P/L?
A.
COS
B.
Accrued interest
C.
Revaluation gain
D.
Gain on disposal
E.
Unearned revenue
参考解析：
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