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A 1004.0 g sample of calcium carbonate that is 95% pure gives 225 L of carbon dioxide at STP when reacted with an excess of hydrochloric acid. What is the density in g/L of the carbon dioxide?
Consider the titration of a 25.0 mL sample of .125M RbOH with .105M HCl. Find the initial pH.
Explain would the calculated molarity of NaOH be too high or too low If the KHP weighed in your experiment today was contaminated with some unknown inert substance.
Some alloys of early and late transition metals (e.g., ZrPt3) have much higher enthalpies of vaporization (per metal atom) than either of the pure metals
Calculate ?Hºrxn for the hydrolysis using bond energies. c. Why are the two values relatively close for the hydration in part "a" but not close for the hydrolysis in part "b"?
the thermite reaction is performed using 8.6g Fe2O3 and 1.8g powdered Al metal. which reactant is in excess and by how much?
What mass of potassium bromide residue remains if 500.0 mL of 0.200 M potassium bromide solution are evaporated to dryness?
what is the theoretical mass of xenon tetraflouride that form when 118. grams of xenon is reacted with 62.0 grams of flourine?
If you set the freezing point of oleic acid as 0 and the boiling point as 130, what is the freezing point of water on this new scale?
a 7.95 L Container holds a mixture of two gases at 37 degrees celcius. the partial pressure of gas A and gas B, respectively, are .287 atm and .698 atm. if .210 mol a third gas is added with no change in volume or temperature.
Aluminum reacts with oxygen to make aluminum oxide. If 5.2 moles of aluminum react, how many moles of aluminum oxide are formed. Show work.
Multiple choice questions in Nuclear reactions - make nuclear fission more efficient, which device is used in a nuclear reactor to slow the speed
Joseph Priestley discovered oxygen in the eighteenth century by using heat to decompose mercury(II) oxide: 2 HgO(s) + heat --> 2 Hg(s) + O2(g)
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