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Calculate the pH at the points in the titration of 40.00 mL of 0.425 M NH3 for the reaction below. NH3(aq) + HNO3 ? NH4+(aq) + NO3?(aq) For NH3, Kb = 1.8x10-5. Enter your answer with 2 decimal places. Enter scientific notation as 1.23E4. (a) When 11.50 mL of 0.470 M HNO3 have been added. (b) When 65.00 mL of 0.470 M HNO3 have been added.
Convert lb mol CaC2 feed to lb and calculate lb inerts added. The total lb solids in the slurry is then the sum of the Ca(OH)2 plus inerts. In calculating the water added, remember that some is consumed in the reaction.]
How much heat is required to warm 213 g of ice from -46.3°C to 0.0°C, melt the ice, warm the water from 0.0°C to 100.0°C, boil the water, and heat the steam to 173.0°C?
DNA is thought to be the chemical compound responsible for the process of heredity. A sample of DNA was found to have density 1.10 g/cm^3 and its molecular weight was estimated to be 3.04 x 10^8 g. What is the average volume occupied by one DNA mo..
Calculate the concentration of cadium chloride contaminant in the original groundwater sample. Round your answer to 2 important digits.
A 4.78- sample of aluminum completely reacts with oxygen to form 6.67 of aluminum oxide. Use this data to calculate the mass percent composition of aluminum in aluminum oxide.
A chemist wants to make 4.5L of a 0.340M CaCl2 solution.What mass of CaCl2 (in g ) should the chemist use?
Determine how many moles of SO 3 are formed if 12.24 moles of O 2 react with excess SO 2 ,? use the balance equation given as 2SO 2 (g)+O 2 (g)----> 2SO 3 (g)
What mass of grams of KNO3 will crystallize out of solution if exactly 475.0 g of its saturated solution at 75 celsius is cooled to 25 celsius?
Equal volumes of an unknown gas and nitrogen (N2) gas take 5.37 min and 3.55 minutes, respectvely to effuse through a small pin hole. calculate the molar mass in g/mol of the unknown gas
In the preparation of the esters given in this reaction, the reaction product is extracted with 5% sodium bicarbonate solution (NaHCO3)in the isolation step. Why? What gas is evolved during this washing step? Write a balanced equation for the reac..
Classify each of the following as a Lewis acid or a Lewis base. Drag the appropriate items to their respective bins. H-, I-, Fe3+, NO2, SnCl4, CH3OH, (CH3)3N
What is the concentration of the HNO3 solution? (b) How many moles of NaOH were in excess after the first addition?
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