Apure silver ring contains 3.50×1022 silver atoms. how many moles of silver atoms does it contain?

Asample of ammonia reacts with oxygen as shown. 4nh3(g) + 5o2(g) 4no(g) + 6h2o(g) what is the limiting reactant if 4.0 g of nh3 react with 8.0 g of oxygen? o2 because it produces only 0.20 mol of no. nh3 because it produces only 0.20 mol of no. o2 because it produces two times less no than nh3. nh3 because it produces three times more no than o2.

How do you lengthen a pattern piece? (family and consumer science, sewing)

Which element has the lowest electronegativity? calcium(ca) gallium(ga) selenium(se) bromine(br)