3. Calculate the average atomic mass for the sample of atoms shown below.
63.50 u
63.75 u 64.25 u 64.50 u

When hydrochloric acid reacts with potassium hydroxide solution, the following reaction occurs. hcl (aq) + koh (aq) h2o (l) + kcl (aq) the reaction gives off heat energy, so it is an reaction.

How many moles of oxygen gas are produced from the decomposition of six moles of potassium

Calculate the percent composition by mass of each element in al(oh)3. use at least three significant figures.