1. In two experiment 0.36g and 0.71g of chlorine combine with a metal X to give y and z respectively, an analysis show that y and z contain 0.20g and 0.40g of x respectively. verify that this law is constant composition.
2. the ions x- charged and y+ charged on isoelectronic each contain a total of 10 electron. how many protons are in the nuclues of the nutral atoms of x and y respectively
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