Methane (ch4) reacts with excess oxygen gas (o2) to produce carbon dioxide (co2) and water (h2o). what is the percent yield of carbon dioxide if the actual yield is 29.8 grams and the theoretical yield is 0.814 moles?
65.6%
71.6%
83.2%
91.4%

The characteristics of two different types of reactions are shown below: reaction a: electrons are gained by the atoms of an element. reaction b: protons are lost by the atom of an element. which statement is true about the atoms of the elements that participate in the two reactions? their identity changes in both reaction a and reaction b. their identity changes in reaction a but not in reaction b. their identity changes in reaction b but not in reaction a. their identity remains the same in both reaction a and reaction b.

How many valence electrons are in atom of radon?

Which of the following is a physical change? a.burning a piece of wood b.sawing a piece of wood in half c.rust forming on an iron fence d.a copper roof changing color from orange to green