Lead can be prepared from galena (lead II sulfide) by roasting the galena in the presence of oxygen to form lead II oxide and sulfur dioxide. Heating the metal oxide with more galena creates the molten metal and more sulfur dioxide. If we start with 25 mol of PbS, how many moles of SO2 do we create from both steps of the reaction? How many moles of lead do we form? PbS + O2 -> PbO + SO2
PbO + PbS -> Pb + SO2

Select the correct answer. when carbon dioxide dissolves in water, it sometimes reacts with water to form carbonic acid as in this balanced equation: co2 + h2o → h2co3. if 495 milliliters of carbon dioxide at 25°c and 101.3 kilopascals reacts with excess water, what is the theoretical yield of carbonic acid? use the periodic table and the ideal gas resource a. 0.889 g b. 1.10g c. 1.27g d. 2.02g what's the answer! quick!

Find the number of grams of hcl needed to react completely with .50 moles of magnesium.

Why are people not able to skip a dive to the deepest part of the ocean