1.A solid cube of iron whose edge is 4 inches weighs 20.8 lb
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1.A solid cube of iron whose edge is 4 inches weighs 20.8 lbs.What is the specific gravity of this sample of iron?Water weighs 62.4 pounds percubic food.
2.Two electrons with the same nl and ml values
a.must be in different atoms
b.are in different orbitals of the same subshell
c.are in the same orbita of the same subshell with opposite spins
d.are indistinguishable from each other
e.none of the above
2.Two electrons with the same nl and ml values
a.must be in different atoms
b.are in different orbitals of the same subshell
c.are in the same orbita of the same subshell with opposite spins
d.are indistinguishable from each other
e.none of the above
1.1 foot = 12 inches
由题可知,铁的密度是20.8/((1/3)^3)=561.6 pounds(ibs) per foor
而水的密度是62.4 pounds percubic food
相比和可知铁的密度是9 g/cm3
官方很明确地表示肯定只考国际单位制中的基本单位,所以不会考到英制单位,请放心.
2.两个电子的主量子数(层数)和磁量子数(伸展方向)相同.lz问题中的nl和ml全称是什么?麻烦给出.
选c
由题可知,铁的密度是20.8/((1/3)^3)=561.6 pounds(ibs) per foor
而水的密度是62.4 pounds percubic food
相比和可知铁的密度是9 g/cm3
官方很明确地表示肯定只考国际单位制中的基本单位,所以不会考到英制单位,请放心.
2.两个电子的主量子数(层数)和磁量子数(伸展方向)相同.lz问题中的nl和ml全称是什么?麻烦给出.
选c
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