200分求一道物理题 懂英文的神人
问题描述：
200分求一道物理题 懂英文的神人
If sodium (Na),with an atomic weight of 23,combines with oxygen (O),with an atomic weight of 16,to from the compound Na2O,what is the ratio of the mass of sodium to oxygen that you would expect to react completely in this transformation?
答
Na的相对原子质量为23,O的相对原子质量为16
4Na+O2=2Na2O
钠氧质量比为α=（23x4）/32=23/8=2.875