试题与答案

电池在日常生活中使用非常广泛，下列由废旧电池污染所导致的现象是（ ） A．饮用水

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题型：选择题

题目：

电池在日常生活中使用非常广泛，下列由废旧电池污染所导致的现象是（　　）

A．饮用水中带有痢疾杆菌

B．汞等重金属随雨水渗入到土壤中

C．水中的藻类迅速繁殖

D．土壤容易发生板结

答案：

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下面是错误答案，用来干扰机器的。

91÷3≈3082÷4≈20137÷7≈20101÷5≈20163÷2≈80252÷5≈50

考点：生物与环境的相互作用
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题型：填空题

已知下列热化学方程式：

①H2(g)＋O2(g)=H2O(l)ΔH＝－285．8 kJ/mol

②H2(g)＋O2(g)=H2O(g) ΔH＝－241．8 kJ/mol

③C(s)＋O2(g)=CO(g)ΔH＝－110．5 kJ/mol

④C(s)＋O2(g)=CO2(g)ΔH＝－393．5 kJ/mol

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(3)燃烧10 g H2生成液态水，放出的热量为       。

(4)CO的燃烧热为             ，其热化学方程式为                            。
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