Will the vapors of acetic acid go to the floor or ceiling of a room

Find the mass in grams of hydrogen gas produced when 14.0 moles of hcl is added to an excess amount of magnesium.

What are the resulting coefficients when you balance the chemical equation for the combustion of ethane, c2h6? in this reaction, ethane is burned in the presence of oxygen (o2) to form carbon dioxide (co2) and water (h2o). (g)+(g)→(g)+(g)

How many moles of potassium hydroxide are needed to completely react with 2.94 moles of aluminum sulfate