CBSE Class 9 Chemistry Atomic Mass And Molecular Mass
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Sample Q&A
- name and write the formula of atleast 20 elements of everyday use
- the ratio by mass of nitrogen and hydrogen in ammonia is 14:3 . calculate the ratio by number of atoms of elements in ammonia molecule .
- Assertion reason (A) phosphate ion is a polyatomic anion (R) in phosphate anion 5 atoms are present
- calculate the formula unit mass of CaCl2
- Calculate the molecular mass of h20
- find molar mass of sodium carbonate
- Calculate the mass of 1.5 mole of methane CH4
- How to find mass number without knowing no of neutrons and atomic mass .
- State the low of mass conservation
- How to find Number of neutrons in an atom if you don't know it's mass number and atomic mass?
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