CBSE /Class 9
Science MCQ Based On Atom and molecules introduction
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CBSE Class 9 Science Atom and molecules introduction
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What is the mass of 1 mole of He?
What is the atomic mass of 1 mole of hydrogen?
Think about balancing the valencies.Do we write the metal first or the non metal.
Hint Not Available
What is the atomic mass of 1 mole of hydrogen?
Hint Not Available
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