i calculate the mass of Iron in 10g iron sulphide (M of Fe = 56 g mol; M of s= 32gmo1-1 Mo FeS =88g mo 1 - 1

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

What are fossils of organisms that existed over a wide area but only for a limited time period called?

Complete the paragraph to describe the characteristics of a borane molecule (bh3). the lewis structure and table of electronegativities are given. the bond polarities in bh3 are , the molecular shape is , and the molecule is .