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Science TNSB Mentoring
Class 10
Atoms and molecules
Molecular mass and percent composition
5.
Mole concept and formulas for moles
Question:
2
m.
1
.
The molecule that has both hydrogen and covalent bonds is __________.
\(N_2\)
\(H_2O\)
\(O_2\)
2
.
\(\text{No. of moles}\) \(=\) \(\frac{\text{No. of molecules}}{\text{X}}\), where, X is
Atomic mass
Atomic number
Avogadro's number
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