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Prepare 25mL 1M sodium acetate-acetic acid buffer solution (both 0.5M). Note: you will be provided with a 5M Acetic acid stock solution and solid sodium acetate with which to make the buffer. Please complete the calculations needed to prepare the buffer Prior to coming to the lab. What are the calculations needed for this.
The concentration of each gas once equilibrium is reached. The new equilibrium concentrations if the volume is suddenly halved (still at 298K)
two hypothetical ionic compounds are discovered with the chemical formulas acl2 and bcl2 where a and b represent
the structure of the compound k2o is best described as a cubic closest packed array of oxide ions with the potassium
An unknown compound has a forula of CxHyOz. You burn 0.1523 g of the compound and isolate 0.3718 g of CO2, and 0.1522 g of H2O. What is the empirical formula of the compound?
Acetylene gas, C2H2(g), is used in welding. (a) Write a balanced equation for the combustion of acetylene gas to CO2(g) and H2O(l). How much heat is produced in burning 1 mol of C2H2 under standard conditions if both\ reactants and products are bro..
Calculate for each of the following solutions, and indicate whether the solution is acidic, basic, or neutral. A. OH ? ]= 3.5×10?4M. Express your answer using two significant figures
calcium carbonate , CaCO3, reacts with stomach acid (HCl, hydrochloric acid) according to the following equation: CaCO3(s) + 2HCl(aq) > CaCl2(aq) + H2O(l) +CO2(g). one tablet of tums, an antacid, contains 500.0 mg of CaCO3. if one tablet of tums i..
Suppose that 155g of ethanol at 21 degrees Celcius is mixed with 240g of ethanol at 88 degrees Celcius at constant atmospheric pressure in a thermally insulated vessel. What is the change in S of the system for the process? The specific heat capac..
boron-fluorine single bonds are approximately 1.52A(152pm) in length. in BF3, the bond lengths are 1.30A. propose an explanation for this discrepancy, making use of resonance structures to illustrate your answer.
Use the Ideal Gas Law in the form n=PV/RT. Remember to change all units to correspon to the values for the gas constant. R=0.0821 L*atm/mol*K.
A 2.48 L sample of He at 739 torr is mixed with 6.08 L of Ar at 325 torr both at 25°C is placed in a 4.80 L container at 25°C. What is the partial pressure (atm) of He? a) 0.48 b) 0.54 c) 0.42 d) 0.50 e) 0.38
If the temperature changes to 81c with no change in volume or amount of gas, what is the new pressure,P2 , of the gas inside the container. Express the pressure numerically in torr.
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