Chemistry Homework Help => CBSE XI and XII Chemistry => Topic started by: Pranjal Singh on February 15, 2021, 11:44:45 AM
Title: Number of atoms in a gold ring
Post by: Pranjal Singh on February 15, 2021, 11:44:45 AM
Here it is [attachment id=0 msg=2826]
Title: Re: Number of atoms in a gold ring
Post by: uma on February 16, 2021, 11:12:25 AM
24 carat god is 100% Gold 22 carat is 22/24 x100% =91.67 % In 0.450 gold ring mass of gold is 91.67*0.450 /100 Now convert this mass to moles and then atoms. = 0.4125 g . 1mole /197.0g . 6.022*10^23 atoms/1mole