How much heat is released when 15 g of steam goes FROM 275 C TO 250 C if the specific heat is 4.18 J/gC?

In an oxidation-reduction reaction, oxidation is what happens when a reactant

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

Identify the lewis acid in this balanced equation: ag+ + 2nh3 -> ag(nh3)2+a. ag+b. nh3c. ag(nh3)2+