Iron in the earth is in the form of iron ore. Common ores include Fe2O3 (hematite), Fe3O4 (magnetite), and FeCO3 (siderite). Calculate the mass percent composition of iron for each of these iron ores. Which ore has the highest iron content?

Video transcript

Hi everyone today we have a question asking us to consider the following yours Chaka site, Kava light, Didja night determine the mass percent of copper in each of the oars and identify which or contains the highest copper content. So we're going to start out here with chalco site just copper two sulfur. And we have to coppers with A molar mass of 0.55. And that is going to be over our total mass. So two times 0.55 Plus the molar mass of sulfur, which is 32 0.7. And then we're going to multiply that by 100 to get a percentage And that equals 79.857%. Next we're going to do koval light. So that is copper sulfur. So we have one copper. So the Mueller massive copper which is 63. over the total Mueller mass, which is the molar mass of copper 63.55 Plus the more massive software. 32.07 times And that equals 66.46%. Next we have did unite Which is copper nine coppers and five cell furs. So we are going to have nine times 63.55 on the top. And on the bottom we are going to have nine times 63. plus five times 32.07. Multiply that all by 100 And that gives us 78.10%. So we have the percentage of copper and all of our ores, the highest one being chalk aside. So these are our final answers. Thank you for watching. Bye.