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After 50 mL of 0.5 M Ba(OH)2 and same volume of HCL of same concentration react in coffee cup calorimeter, you find Q rxn to be 1.386 kJ. Calculate DeltaH of reaction in kJ/mol H2O made.
question if 61.5 l of oxygen at 18c and an absolute pressure of 2.45 atm are compressed to 48.8l and at the same time
How many grams of dry NH4Cl needed to be added to 1.50L of a 2.00M solution of ammonia NH3 to prepare a buffer solution that has a pH of 8.60?
an empty beaker weighs 41.19 g. when it is completely filled with water density 1.0 gml the beaker weighs 92.92 g.ahow
Calculate w (in kJ) when 566 g iron (III) oxide (MM = 159.7 g/mol) reacts with excess carbon to produce carbon dioxide gas at 332 K: 2Fe2O3(s) + 3C(s) ? 4Fe(s) + 3CO2(g)
How many liters of nitrogen dioxide are produced? Temp and pressure were constant. Must show work.
Calculate the mass of each product formed when 174 g of silver sulfide reacts with excess of hydrochloric acid (HCI).
Calculate the equilibrium constant Ksp for Mg(OH)2 (s) at 25 degrees celcius. Is the dissolution of Mg(OH)2 endothermic or exothermic
Which electrode gains mass and which loses mass as the cell reaction proceeds? What is the equation for the equation for the overall cell reaction?
Think about where aluminum comes from, how we obtain/purify it and its chemical and physical properties (metal vs. plastic, weight, corrosive vs. non-corrosive). What are some factors that were probably considered before deciding to use aluminum to m..
What is the pH of a solution of a strong acide like tintric acid, HNO3, which is 5.6 x 10^-4 M? [HNO3 is a strong acide, so it is completly ionized in aqueous solution
What are the typical major classes like in terms of content, format, and instructor's style of teaching? For example: emphasis on labs/lecture/discussion, small vs. large class sizes, etc.
What is the molarity of a solution if 4.50 g NaF is dissolved in enough water to make 250.0 mL of solution?
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