题干

在社会可持续发展的历史进程中,人类要合理地开发和利用能源、资源,保护好环境,这一切都离不开化学.

(1)研究发现,化学反应伴随着能量的变化,许多化学反应的能量变化主要是表现为____ (填“热量”或“光能”)的吸收或放出.大自然利用太阳能最成功的是植物的光合作用,绿色植物在光合作用中把太阳能转化为____ (填“电能”或“化学能”).原电池是一种常见的能量转化装置,在原电池中发生的化学反应属于____ (填“氧化还原反应”或“非氧化还原反应”).

(2)燃气公司要把一套以煤气(主要成分是CO、H2)为燃料的灶具改为以天然气为燃料的灶具时,灶具应作相应调整,合理的方法是____ (填字母).

a.增大空气的进入量            

b.增大天然气的进入量

c.空气和天然气的进入量都减小

(3)目前,石油和煤不仅是主要的能源,也是重要的化工原料.下列石油或煤的加工过程中,能够得到苯的是____ (填字母).

a.石油的裂解            b.煤的干馏             c.石油的分馏

(4)已知某地区酸雨污染比较严重.分析该地区降雨的成分发现,雨水中的阴离子以硫酸根离子为主,约占阴离子总量的62%;阳离子以铵根离子为主,约占阳离子总量的84%.阴离子中SO42和NO3的质量比约为4.13:1,且NO3的比例呈明显上升的趋势.

①该地区大气污染的特征是____ (填字母).

a.煤烟型           

b.机动车尾气型

c.由煤烟型向煤烟型与机动车尾气混合型转化

②请你给出该地区防治酸雨的两条主要措施:____ 、____ .

③某研究小组拟选择“不同地点空气中二氧化硫的含量分析”为课题进行探究.如果你参加该课题的探究,在小组讨论测定地点时,你建议选择的测定地点分别是____ (至少答出3种不同类别的地点).

(5)汽车尾气中含有氮氧化物和一氧化碳等有害气体,在加装了汽车尾气处理装置后,可以使尾气中的有害成分在催化剂作用下转化为N2、CO2排出.现在有NO、NO2、CO三种气体组成的混合气甲40.32L(标准状况下),在催化剂存在下充分反应后,得到无色无毒的混合气乙,再将乙通入到足量的石灰水中生成100g沉淀,则原混合气甲中NO与NO2的体积比为____ .

上一题 下一题 0.0难度 选择题 更新时间:2010-05-29 10:47:17

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Worlds of Fun

    Location: Worlds of Fun is located off Highway 435 in Kansas City, Missouri.

    History: Worlds of Fun was opened on May 26, 1973, at a cost of 25 million dollars. Loosely themed around the Jules Verne book, Around the World in Eighty Days, the park was founded by Hunt Midwest Company. In 1982, Hunt Midwest bought a nearby waterpark, Oceans of Fun. In 2013, Worlds of Fun and Oceans of Fun were combined to a one ticket admission, providing all guests with access to 235 acres of amusement and water rides.

    Hours: Worlds of Fun is open from April through Halloween.

    Tickets: Buy and print online. Always try to buy your tickets in advance, to save time when you get to the park.

    Reservations: Worlds of Fun sells “Fast Lane” cards that save riders' time by allowing them to bypass the majority of wait for most of rides and attractions including Mamba, Prowler, and Patriot. Ride as many times as you want all day long.

    Strategy: Most visitors tend to begin the day with Prowler, the hottest attraction in the park. Use that tendency to your advantage and head to the Patriot first. After that, try the Dragons. Then work your way back to the Prowler. After riding the Prowler, there is only one coaster left, Mamba. Hit it next. If the park is not very crowded, you can ride Boomerang on the way to Mamba. After riding Mamba, head back for a ride on the Wolf. By then you will have tried most of the popular rides and attractions in the shortest possible time.

    News: In 2017, Worlds of Fun is adding Steel Hawk, a ride that will take guests up 301 feet in the air and spin them at a 45-degree angle for a 60-second flight. Wait to have a try!