题目

但不会用英语回答
PS:别被那么多题目吓到 其实都不难 但我不知道怎么用英语回答 比较书面的英语答题语句不会写
c.Atmospheric pressure decreases with increasing altitude.With this fact in mind,explain why helium- filled weather balloons are underinflated when they are launched from earth.
d.A commonly used packing material consists of “bubbles” of air trapped between bonded layers of plastic,known as bubble wrap.Using the ideal gas law,explain why this packing material offers less protection on cold days than on warm days.
e.At the start of a trip,a driver adjusts the absolute pressure in her tires to be 2.81 x 105 Pa when the outdoor temperature is 284 K.At the end of the trip she measures the pressure to be 3.01 x 105 Pa.Ignoring the expansion of the tires,find the air temperature inside the tires at the end of the trip
f.A 50 mL glass vial of xenon gas at 23 ˚C and 130 kPa was placed in the refrigerator,where the temperature was 3.6 ˚C.What is the pressure of the chilled xenon gas in the vial?
g.A lung-

提问时间：2020-12-03

答案

第C题的意思是,为什么气象气球从地面发射时是未充满气的,并不是说它升到高空会缩小.
underinflated 是 未充满气的.
D题,就是根据PV=nRT,P,n不变,温度T降低,V减小.不知道英文该咋回答.
E题,题目是告诉了你室外的温度,让你求的是轮胎内气体的温度,不是室内温度,轮胎内气体的温度在开车前是等于室外温度的.这题不考虑轮胎膨胀,所以V不变,根据PV=nRT,可以求出温度和压强的关系,就能求出轮胎内气体的温度了.
F题你的思路是对的,因为体积不变,根据温度变化求压强变化.
G题,atm表示标准大气压1.01*10^5Pa.知道P,T求V,英语我也不清楚应该怎么表达.
H题,不用求出来n的值,直接用 PV=nRT 求出来 T=PV/nR,把P和V变化前后的倍数关系带进去,得到T变化的倍数,就能求出来了.
英语回答我实在是无能为力了,没有试过用英文的.