题干

某同学对催化剂产生了兴趣,通过查资料了解到氧化铜、氧化铁等都能加速氯酸钾的分解.为了证明氧化铜能加快氯酸钾的分解,他们设计了实验装置,并进行气体的制备和测量实验.实验时均以生成40mL气体为标准,相关记录见下表:

实验序号

KClO3质量

加入其它的物质

待测数据

1.2g

无其它物质

1.2g

加入少量的CuO

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Choose Your One-Day-Tours!

    Tour A - Bath &Stonehenge: including entrance fees to the ancient Roman bathrooms and Stonehenge -£37 until 26 March and £39 thereafter.

    Visit the city with over 2,000 years of history and Bath Abbey, the Royal Crescent and the Costume Museum, Stonehenge is one of the world's most famous prehistoric monuments dating back over 5,000 years.

    Tour B - Oxford & Stratford  including entrance fees to the University St Mary's Church Tower and Anne Hathaway's -£32 until 12 March and £36 thereafter.

    Oxford: Includes a guided tour of England's oldest university city and colleges. Look over the "city of dreaming spires(尖顶)"from St Mary's Church Tower. Stratford: Includes a guided tour exploring much of the Shakespeare wonder.

    Tour C - Windsor Castle &Hampton Court including entrance fees to Hampton Court Palace -£34 until 11 March and £37 thereafter.

    Includes a guided tour of Windsor and Hampton Court, Henry VIII's favorite palace. Free time to visit Windsor Castle (entrance fees not included).With 500 years of history, Hampton Court was once the home of four Kings and one Queen. Now this former royal palace is open to the public as a major tourist attraction. Visit the palace and its various historic gardens, which include the famous maze (迷宫)where it is easy to get lost!

    Tour D -Cambridge including entrance fees to the Tower of Saint Mary the Great -£33 until 18 March and £37 thereafter.

Includes a guided tour of Cambridge, the famous university town, and the gardens of the 18th century.