Please help me, I really need it! Match these items.

instantaneous combustion

mass of substances before and after a reaction is the same

substances that combine

yields

rapid oxidation

new substance

slow oxidation

* * *

rust

product

arrow symbol

Law of Conservation of Matter

explosion

burning

reactants

Which mathematical relationship should you us to convert moles of a substance into grams

Agas at 155 kpa and standard temperature has an initial volume of 1.00 l. the pressure of the gas rises to 500 kpa as the temperature also rises to 135°c. what is the new volume? 2.16 l 0.463 l 0.207 l 4.82 l

Silver tarnishes as silver metal reacts with hydrogen sulfide, h2s, in the air. in this reaction, dark silver sulfide, au2s, covers the surface of silver. when silver is polished, this coating of silver sulfide can be removed from the surface. this makes the silver shiny again. enter the coefficients that balance the tarnishing reaction equation. (type 1 for no coefficient.)