3 Mg + 1 Fe2O3 + 3 MgO + 2 Fe; What is the ratio of moles of Mgo to moles Fe?

a) 1 mol Fe/ 2 mol Fe

b) 3 mol Mgo / 2 mol Fe

c) 2 mol Mg/ 3 mol Fe

d) 3 mol Mg / 2 mol Fe

Sylvanite is a mineral that contains 28.0% gold by mass. how much sylvanite would you need to dig up to obtain 77.0 g of gold? explain how you got your answer and the steps you took. you

You have a sample of a gas that occupies a volume of 17ml at -111 degrees celsius. what volume does the sample occupy at 88 degrees celsius? show all work asap

Identify one disadvantage to each of the following models of electron configuration: -dot structures -arrow and line diagrams -written electron configurations type in your answer below. (answer) -dot structures do not show the distribution of electrons in orbitals and take up a lot of space. -arrow and line diagrams take up a lot of space and make it difficult to count electrons. -written configurations make it easy to lose count of electrons and do not show the distribution of electrons in orbitals.