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A Brand X antacid tablet was analyzed by a student following the procedure used in this experiment. The stdent dissolved the tablet in 25.00 ml of a standardized HCL solution containing 1.627 x 10-2 mol of HCL. The back-titration of the excess HCL required 7.83 ml of 1.035M NaOH solution.
a. Calculate the molar concentration of the HCL solution that the student used.
b. Calculate the number of moles of HCL neutralized by the antacid tablet.
What is the percent yield of a reaction in which 212 g phosphorus trichloride reacts with excess water to form 109 g HCl and aqueous phosphorus acid (H3PO3)?
What is the formula weight of KI? What quantity of KI is present in 301 mL of a 0.30 M solution?
(a) how many protein molecules do you find in the average eukaryotic cell and prokaryotic cell? (b). What is the ratio of protein found within a human heart compared to the prokaryotic cells inhabiting human intestines?
Calculate the new volume of a 7.0Liter balloon if the pressure is reduced from 1.0 atmosphere to 0.80 atmosphere (assume the temperature remains constant)
If 4 liters per minute of 100 ppm 1,1,2-trichloroethane solution is to be reduced by 99% in a diffused air CSTR, what air flow is required if equilibrium is assumed. What air flow is needed for 90% removal
A sample of 2.0 grams of ammonia was placed in a 25.0 ml container and heated to 300 degrees C. After equilibrium was reached, the concentration of hydrogen was 1.58 moles/liter. What is the value of the equilibrium constant at 300 degrees C for t..
James needs a 0.600 M solution of KCL. He measures out 0.600 g of KCL and adds 1 L of water to the solid.
On a smoggy day in a certain city the ozone concentration was 0.54 ppm by volume. Calculate the partial pressure of ozone and the number of ozone molecules per liter of air if the temperature and pressure
Calculate the heat of combustion of cyclohexatriene using the bond energies for C=C,C-C, and CH provided below. The actual value measured experimentally is 3331.2 KJ/mol
The solution density if 1.001g/mL. Calculate the Ca2+ and Mg2+, molarity, molality, mol fraction, and the PPM. Please show examples.
calculate the wavelength of the emitted radiation if an electron in a hydrogen atom went from n = 4 to n = 1. in what region of the electromagnetic spectrum(e,g.X-ray, visible, infrared) would this radiation lie?
How many grams of are CaH2 needed to generate 147L of H2 gas if the pressure of H2 is 827 torr at 20 C?
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