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> 为应对全球能源危机,各国争相发展新能源项目.我国上海也研制出了氢燃料电池汽车的样车,该车共配有3个氢气罐,功率是50kW,速度可达120km/h,三个罐充满氢气后可以跑250km以-物理
为应对全球能源危机,各国争相发展新能源项目.我国上海也研制出了氢燃料电池汽车的样车,该车共配有3个氢气罐,功率是50kW,速度可达120km/h,三个罐充满氢气后可以跑250km以-物理
题目简介
为应对全球能源危机,各国争相发展新能源项目.我国上海也研制出了氢燃料电池汽车的样车,该车共配有3个氢气罐,功率是50kW,速度可达120km/h,三个罐充满氢气后可以跑250km以-物理
题目详情
为应对全球能源危机,各国争相发展新能源项目.我国上海也研制出了氢燃料电池汽车的样车,该车共配有3个氢气罐,功率是50kW,速度可达120km/h,三个罐充满氢气后可以跑250km以上.目前,氢燃料电池汽车每100km耗氢1kg,氢的市场价是20 元/kg.普通家用汽油汽车每100km的耗油量是10L,93号汽油的市场价是5.60 元/L.
根据以上材料,回答下列问题(技术结果小数点后保留一位数字):
(1)使用氢燃料电池汽车有哪些优越性?(请简要写出一条即可)
(2)在0℃、1个标准大气压下,氢气的密度是0.09kg/m
3
,1kg氢气在这个状态下的体积是多少立方米?常温下氢气很难被液化,氢燃料电池汽车是如何解决氢气体积过大这一难题的?
(3)若家用汽车平均每天行驶50km,每月按30天计,按目前价格,使用氢燃料电池汽车比使用普通汽油汽车,每月可节约多少元的燃料费?
题型:问答题
难度:中档
来源:不详
答案
(1)氢气燃烧生成水,无污染.
(2)氢气在这个状态下的体积是V=
class="stub"m
ρ
=
class="stub"1kg
0.09kg/
m
3
≈11.1m3,常温下可以压缩氢气的体积,使其液化,从而减小体积.
答:1kg氢气在这个状态下的体积是11.1m3,常温下可以压缩氢气的体积使其液化.
(3)家用汽车一月行驶的距离S=30×50km=1500km,每月消耗氢气的质量是
class="stub"1500km
100km/kg
=15kg,
使用氢燃料电池汽车每月耗费15kg×20元/kg=300元,
每月消耗汽油的体积是
class="stub"1500km
100km
×10L
=150L,
使用汽油每月耗费150L×5.6元/L=840元,
每月可节省燃油费840元-300元=540元.
答:每月可节省燃料费540元.
上一篇 :
早晨,室外的花草上的小露珠,这是
下一篇 :
以下措施中,无法使气体液化的是
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题目简介
为应对全球能源危机,各国争相发展新能源项目.我国上海也研制出了氢燃料电池汽车的样车,该车共配有3个氢气罐,功率是50kW,速度可达120km/h,三个罐充满氢气后可以跑250km以-物理
题目详情
根据以上材料,回答下列问题(技术结果小数点后保留一位数字):
(1)使用氢燃料电池汽车有哪些优越性?(请简要写出一条即可)
(2)在0℃、1个标准大气压下,氢气的密度是0.09kg/m3,1kg氢气在这个状态下的体积是多少立方米?常温下氢气很难被液化,氢燃料电池汽车是如何解决氢气体积过大这一难题的?
(3)若家用汽车平均每天行驶50km,每月按30天计,按目前价格,使用氢燃料电池汽车比使用普通汽油汽车,每月可节约多少元的燃料费?
答案
(2)氢气在这个状态下的体积是V=
答:1kg氢气在这个状态下的体积是11.1m3,常温下可以压缩氢气的体积使其液化.
(3)家用汽车一月行驶的距离S=30×50km=1500km,每月消耗氢气的质量是
使用氢燃料电池汽车每月耗费15kg×20元/kg=300元,
每月消耗汽油的体积是
使用汽油每月耗费150L×5.6元/L=840元,
每月可节省燃油费840元-300元=540元.
答:每月可节省燃料费540元.