If I add 200 mL of water to 600 mL of 16 M HNO3 what will the solution's final molarity be?

This question is about electrolysis. metal spoons can be coated with silver. this is called electroplating. suggest one reason why spoons are electroplated?

As air becomes more dense, (select all that apply) o. air weighs less o. gas molecules are closer together o. air is colder o. air weighs more o. gas molecules are further apart o. air is hotter

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