使劲往树上爬的猪
幼苗
共回答了14个问题采纳率:100% 举报
polar molecule---1.contains polar bond
2.its shape must be such that the centres of positive and negative charges are not in the same place.
3.asymmetrical
non-polar molecule---1.symmetrical
2.the centre of positive and negative charge are in the same place
CH2OH:polar
C4H8O2:non-polar
C3H7NO2 :polar
C9H11NO2:polar
我是学化学的,对生物一窍不通.这里的每个都看一下就好了~
1年前
10