7. a sample of iron has the dimensions of 2 cm x 3 cm x 2 cm.
if the mass of this rectangular-shaped object is 94 g, what is
the density of iron?

14. complete and balance the equations for the single displacement reactions. a. zn + pb(no3)2 -> b. al + niso4 -> 15. complete and balance the equations for the double displacement reactions. a. agno3(aq) + nacl(aq) -> b. mg(no3)2(aq) + koh(aq) -> 16. complete and balance the equations for the combustion reactions. a. __ ch4 + o2 -> b. __ c3h6 + o2 -> c. + o2 ->

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

What is a difference between a mixture of elements and a mixture of compounds