Use the following reaction: 2 Mg + 02 ---> 2 Mg0 + 72.3 kJ. How many kJ are produced 1.66 mol of Mg are burned in the presence of oxygen? second decimal place

Which statement is usually true about the relationship between activation energy and reaction rates? low activation energy barriers result in low rates. high activation energy barriers result in low rates. low activation energy barriers result in no reaction. high activation energy barriers result in no reaction.

Rank the four gases (air, exhaled air, gas produced from from decomposition of h2o2, gas from decomposition of nahco3) in order of increasing concentration of co2

What does a numerical subscript following an element in a chemical formula mean?