In polar or non-polar solvents 8.5.9 Summary: Properties of Simple Covalent Structures • High Melting and Boiling Points • Brittle; Soft • Low Melting and boiling points. 109 Download free eBooks at bookboon.com Fundamentals of Chemistry Contents 4 Solutions and Concentrations 4.7.2 Exercise Commercial concentrated hydrochloric acid is 12.4 M. How many moles of ethanol used .