ICSE Class 9 Concise Chemistry Selina: The ICSE Class 9 Concise Chemistry Selina Book is one of the most reliable textbooks for students aiming to strengthen their chemistry concepts and score high in ...
\({\%~of~an~element} = \frac{mass~of~an~element~in~the~compound}{relative~formula~mass~M_r} \times 100\) There are six atoms of hydrogen in the compound, so the mass ...
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