NCERT Class9 Science Solutions: Chapter 3Atoms And Molecules Part 6
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Long Answer Questions
Question 24:
Verify by calculating that

5 moles of and 5 moles of do not have the same mass.

of calcium and magnesium elements have a mole ratio of .
Answer:
Question 25:
Find the ratio by mass of the combining elements in the following compounds.
Answer:
A. 





B. 



 
C. 





D. 





E. 



 
F. 





Question 26:
Calcium chloride when dissolved in water dissociates into its ions according to the following equation.
Calculate the number of ions obtained fromwhen of it is dissolved in water.
Answer: