How do we measure forces?

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 ->

Write the chemical symbols for three different atoms or atomic cations with 27 electrons. asap!

This element exists in adundance in the sun.explain how you would go about capturing sunlight.would this captured sunlight contain any of the element?