质量为450克的水结冰后,其体积变化了多少?
质量m不变
m=450g水的体积Vo=m/p水=450g/(1g/cm^3)=450cm^3=4.5*10^-4m^3
m=450g冰的体积V=m/p冰=450g/(0.9g/cm^3)=500cm^3=5*10^-4m^3
体积增大量=V-Vo=5*10的负5次方立方米
人气:497 ℃ 时间:2020-04-12 09:03:41
解答
450g水的体积:V水=m/p水=450g/(1g/cm^3)=450 cm^3
450g冰的体积:V冰=m/p冰=450g/(0.9g/cm^3)=500 cm^3
所以:其体积变化为,变多了50 cm^3
推荐
猜你喜欢
- you can tell that lisa really wanted to win ,though解释下
- 为什么日本字和中国字很像?
- 几个小朋友排队列,每列站8人还差7人,每列站7人多出8人,有多少个小朋友来排队列?
- 求教一道数学题,
- 人类为了测量地球到月球之间的距离,向放在月球上的装置发射激光,经过2,56S,在地面上接收到返回的激光信号,那么可以测得地球和月球之间的距离为_____m
- 1+111等于几
- Are not only you but also he going to Beijing?
- You are with agroup of students and have found two tickets.what do you ask the group?