Answer:
The molar mass of Pb(Cr2O7)2 is 639.2 g/mol.
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The answer is: A
C-14 is not stable and this is the reason why it goes through radioactive decay.
The chemical formula of Iron (III) Sulfide is FeSO3. This element or compound has another name which is <span>ferric sulfide or sesquisulfide.</span>
Explanation:
H2So4=sulphuric acid , strong acid
