Gold reacts with elements in group 7 of the periodic table 0.175g of gold reacts with chlorine. The equation for reaction for the reaction is
2Au + 3cl2 ——> 2Aucl3
Calculate the mass of chlorine needed to react with 0.175g of gold. Give your answer in mg
Relative atomic masses cl=35.5 Au=197

Plz choose one of the compounds from the table and explain how you know the numbers of atoms in your formula. is it possible for two different compounds to be made from the exact same two elements? why or why not? with a limited number of elements (less than 120 are known), does this mean we also have a small number of compounds or do we have a large number of compounds in this world?

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Avariable that is not being directly tested during an experiment should be