Identify the symbol used for water according to $\text{Dalton's}$ atomic theory?

Zinc sulphate contains $22.65\%$ of zinc and $43.9\%$ of water of crystallization. If the law of constant proportions is true,then the weight of zinc required to produce $20\, g$ of the crystals will be ............. $g$.

The percentage of copper and oxygen in samples of $CuO$ obtained by different methods were found to be the same. This illustrates the law of

The statement related to the law of definite proportions is:

When the volume is expressed,what does the law of definite proportions represent?

From the given information, select the suitable law of chemical combination:

Cupric Carbonate	% of $Cu$	% of $C$	% of $O$
Natural sample	$51.35$	$9.74$	$38.91$
Synthetic sample	$51.35$	$9.74$	$38.91$