Why is anthracite a better fuel than lignite?

Consider the four elements above. which one of these elements will combine with oxygen in a 1: 1 ratio?

A2.5% (by mass) solution concentration signifies that there is a 2.5 % (by mass) solution concentration signifies that there is blank of solute in every 100 g of solution. of solute in every 100 g of solution

What is the chemical name of the compound ti2o3? use the list of polyatomic ions and the periodic table to you answer.