CFCs were found to destroy what important compound in our atmosphere? A: ozone
B: nitrogen
C: water vapor
D: helium

The molecular formula for caffeine is cshion402. which of the following elements is not found in caffeine?

Which element is the least metallic between cadmium, silver, zinc, or iron?

Consider the following reactions. (note: (s) = solid, (l) = liquid, and (g) = gas.) mg(s) + ½o2(g) → mgo(s) + 146 kcal/mole h2(g) + ½o2(g) → h2o(g), δh = -57.82 kcal/mole what type of reaction is represented by the previous two examples?