give me some extra questions of ch 3 chemistry class 9 out of ncert syllabus
you may give it from any help book also!!
sathya1498:
about what topic in chemistry
ch 3
atoms and molecules
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hey mate solve this question
Q: if the isotope of chlorine with masses 35 units is present 75% in nature and 37 units is present 25% in nature ,
then find the average mass of the both isotopes of chlorine?
Q: if the isotope of chlorine with masses 35 units is present 75% in nature and 37 units is present 25% in nature ,
then find the average mass of the both isotopes of chlorine?
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