ICSE Class 9 - Basics of Chemistry Videos
- Calculate the percentage of nitrogen and oxygen in NH4NO3
- how to calculate the mass of an atom
- what is symbol
- A molecular formula represents an element
- formula and valence of aluminate
- dash +H2O>CO+DASH
- what is the valency of NH4 in (NH4)3PO4
- Mark the following statements whether true or false : 1.All elements have a unique valency. 2.Phosphate is a divalent ion. 3.Chemical equations are balanced to satisfy the law of conservation of mass.
- what is atom
- what qualitative and quantitative information is conveyed by a symbol
