A pure silver ring contains 5.25×1022 silver atoms. How many moles of silver atoms does it contain?

In saturated organic compounds, all the bonds between carbon atoms are called?

Marcel just purchased 1.69 grams of iron fillings in order to make living putty for his 6 year old niece. how many moles of iron are made in his sample?

If a molecule with a molecular formula of c13h18 is treated with an excess of h2 in the presence of finally divided pt metal under conditions required for maximum hydrogenation of the molecule to give a molecule with a formula c13h24, how many rings are in the molecule?