2018, 3 (g) In a separate experiment, the student is given a sample of powdered Fe(s) that contains an inert
impurity. The student uses a procedure to oxidize the Fe(s) in the sample to Fe2O3(s). The student
collects the following data during the experiment.
Mass of Fe(s) with inert impurity
6.724 g
Mass of Fe2O3(s) produced
7.531 g
(g) Calculate the number of moles of Fe in the Fe2O3(s) produced.

Total the mass on the syringe. record it in the correct row of the data table. kg done click and drag weights to change the pressure. click the syringe to zoom in and see the volume. intro

Astudent made the lewis dot diagram of a compound as shown. mg is written with two dots shown on its top. an o is written on each side of mg. each o has six dots around it. an arrow is shown from one dot on mg toward the vacant space around the o on the right. another arrow is shown from the other dot on mg toward the vacant space around the o on the left. the title of the art is students lewis dot model. what is the error in the lewis dot diagram? an o atom should transfer all its six electrons to mg because the formula is mgo. both electrons of mg should be transferred to one o atom because the formula is mgo. the electrons should be transferred from each o atom to mg because mg has fewer electrons. the number of dots around mg should be four because it has to transfer two electrons to each o.

How can liquids be seperated by density a the liquids are absorbed onto a paper b the liquids are turned into seperate vapors c the liquids are collected as they evaporate d the liquids are allowed to seperate into layers