1.假设金原子为一个2.5*10的负9次方米的立方体,那么在一张厚为1.0*10的负7次方的金箔上,有多少个金原子能一个挨一个地面对面地堆在这张金箔上?
2.平均一公斤铝由2.2*10的25次方个原子组成.那个一块10厘米*1.2厘米*15.6厘米的铝块有多少个原子?假设铝的密度在2.7克/每平方厘米,或2.7X10的三次方公斤/每立米
我不会做,只会翻译.没办法啦.物理学得不好.对不起啦
if a gold atom is considered to be a cube with sides 2.5*10^
1个回答
相关问题
-
He is considered to be a gift manager,_____ with a quick min
-
In the competition to be held, a gold medal, together with a
-
A cube measuring 4 inches per side is painted.It is then cut
-
关于立体几何,GRE数学题.What is the maximum number of cubes with sides
-
Although A.citri is considered to be a necrotrophic fungus a
-
A cube with volume 8 cubic centimeters is inscribed in a sph
-
英语翻译Atoms can also be quoted with a single quotation mark (’
-
a square is a () with () straight equal sides
-
英语翻译．If one side of a triangle is 2 times of another side an
-
求改错 Having knowledge of ethnic culture is considered to be a