What Is the Composition of iron? State 4 properties of iron
State 4 ways by which iron reacts with other substances.​

What element breaks down into yttrium-90?

Calculate the mass of silver needed to react with chlorine to produce 126g if silver chloride?

What two factors can affect the properties of a hydrocarbon? a. the number of its carbon atoms and the number of single bonds b. the number of its carbon atoms and the arrangement of its atoms c. the arrangement of its atoms and the number of its double bonds