Get detailed and accurate answers to your questions on IDNLearn.com. Find the solutions you need quickly and accurately with help from our knowledgeable community.
Answer;
4.29%
Explanation:
molecular weight of Al(NO3)3 is
27+(14+16*3)3=213 amu
total mass of oxygen is 3*3=9 amu
percentage is 9/213*100=4.25%