Question

help with chem lab please (this is all the information given)

What Metal Oxide Has Been Formed? Final Lab Submission Purpose: The main purpose of this lab is to weigh and find out how oxidization has taken place along with calculations. Experimental Data: Mass of dry crucible = 31.373 Mass of metal = 0.0318 Mass of crucible and metal = 31.404 g Mass of crucible and metal after experiment = 31.418 Discussion: 1. Based on what you know about the unknown metal sample propose a balanced chemical equation for a. the formation of the Group 1 metal oxide b. the formation of the Group 2 metal oxide 2. Using the experimental data that you collected, determine the mass of the metal and oxygen in your final sample.

Answer 1

1)a) 4M (s) + O₂(g) → 2M₂0 (3) b) 2M(s) + O2(g) 2MO (s) a Group 1 metal is tl charged and oxide anion is -2 charged in the oxide formed will be mo while group- and has t2 charge (divalent) that forms mo oxide. Mass of day crucible = 31.3739 mass of metal = 0.031g mass of Queble + metal = 31.4049 mass of crucible +metal = 31.418 afterenpt. - 31.918g Mass of oscide = 31.418-31.404 g = 0.014g Thus; mass of metal → [0.0319] 9. 1 oxide oxygen (0.0149