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The most common source of copper (rm Cu) is the mineral chalcopyrite (rm CuFeS_2). How many kilograms of chalcopyrite must be mined to obtain 200. g of pure rm Cu?
the heat capacity of the calorimeter has been determined to be 24.0J/degreeC. if the temperature of the system increases by 6.0C what is the heat generated(qrxn) by the reaction?
For the reaction: Rb2SO3(s) + 2HBr(aq) --> 2RbBr(s) + H2SO3 A solid sample of Rb2SO3 weighing 6.24 g reacts with 1.38 L of gaseous HBr, measured at 75°C and 0.953 atm pressure
When Mg-EDTA is added to a sample to compensate for a lack of Mg^+2, why is no blank correction necessary
What should you observe happening to the gas produced: A) If the concentration of the acid HCl is increased? B) If the solid calcium carbonate is in powder form
The drying oven, although thought to be set at 125°C, had an inside temperature of 84°C. How will this error affect the reported percent by mass of the limiting reactant in the salt mixture. too high, too low, or unaffected
This buffer is to be prepared by mixing 25.0 mL of 0.1 M HCl with the correct mass of solid sodium acetate. You will determine the mass of solid sodium acetate needed.
Which of the molecules N2, NO, O2, C2, F2, and CN would you expect to be stabilized by (a) the addition of an electron to form the anion (b) the removal of an electron to form the cation
Identify three radioactive elements or reactions of different types and write the nuclear reaction for each element.
How much HCl gas can be produced at STP by reacting 198 g of NaCl with excess H2SO4?NaCl + H2SO4 ! NaHSO4 + HCl.
the following factors controlling the synthesis of acetyl CoA in muscle and liver include all of the following EXCEPT: a. a high carbohydrate meal will influence the movement of fatty acids across the cell membrane by activating a cell membrane car..
How tdo you rotate fischer projections to figure out if they are D/L configurations. I know the difference between D/L but unsure of how to rotate them! Please you examples of D/L-Alanine
What mass of water (in grams) forms from the reaction of 2.66 L of hydrogen gas and 2.06 L of oxygen gas. Both gases are at 759 torr and 7.9 oC.
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