1.How many grams of iron are needed to form 8.8g of FeS? 2.How many liters of hydrogen can be prepared from 36g of H2O?
3.How many atoms of silver are produced from 46.4g of Ag2O?
4.How many grams of Al2S3 can be formed from 5g of S?
5.How many liters of hydrogen can be prepared from 54g of water?
6.How many moles of osmium are in 3.5 x 10^23 atoms?
7.What mass of silver oxide is needed to form 12.5g of silver?

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.