chemistry question!!!!!!!!!!!
回答 (2)
2006-12-25 8:55 pm
✔ 最佳答案
molecular mass(molecular weight)=the sum of the atomic masses of the molesules.e.g. Na2CO3
molecular mass=2*22.99+12.01+3*16.00=106.0
參考: Handout
2006-12-25 8:58 pm
Relative molecular mass is used to describe the relative masses of molecules.
Relative molecular mass of an element or compound
= Sum of relative atomic masses of all atoms present in one molecule of the element or compound
Relative molecular mass of an element or compound
= Sum of relative atomic masses of all atoms present in one molecule of the element or compound
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