<span>Fayalite has a hardness of 6.5-7 on the Mohs scale. Therefore it scratches orthoclase (hardness 6), but not topaz (hardness 8).HOPE THIS HELPS:]</span>
<span>d. tarnishing is a chemical change. </span>
Answer:
physician fitness plays a important role in our life it increases our immunity and help in fighting germ, bacteria and viruses
Then it has the force of 126.. I'll get back to you on the unit of measurement...
