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Describe the preparation of 400 mL of a solution that is 0.0500 M in I-, starting with MgI2.
A student prepares a buffer by dissolving solid sodium acetate, NaCH3COO, in a solution of acetic acid, CH3COOH. Write the net ionic equation for the buffer system.
Diethyl ether C4H10O(l), a flammable compound that has long been used as a surgical anesthetic has a structure
A hot-air dryer is used to reduce the moisture content of 1500 kg/min of wet wood pulp from 0.75 kg H20/hg dry pulp to 0.15 wt% H20. Air is drawn from the atmosphere at 28 deg. C, 760 mmHg, and 50% relative humidity, sent through a blower-heater, ..
A solution of H2SO4(aq) with a molal concentration of 4.37 m has a density of 1.233 g/mL. What is the molar concentration of this solution?
Dry ice (solid CO2 ) has occasionally been used as an "explosive" in mining. A hole is drilled, dry ice and a small amount of gunpowder are placed in the hole, a fuse is added, and the hole is plugged.
The air is breathed underwater at 100 feet where the total pressure is 4.1 atm. What is the partial pressure (atm) of oxygen under these conditions? Calculate the relative rate of diffusion of CO2 compared to SO2.
Why is it necessary to first "process" the broccoli before preparing the test sample? What factors are affected that will adversely influence
Calculate the maximum mass in grams of H2S that can form when 155 g aluminum sulfide reacts with excess water according to: Al2S3 + H2O => Al(OH)3 + H2S [unbalanced]
2.9 mol Fe(OH)3 and 7.7 mol H2SO4 react according to the equation 2 Fe(OH)3 + 3H2SO4 -!> Fe2(SO4)3 + 6H2O. If the limiting reactant is Fe(OH)3, calculate the amount of Fe2(SO4)3 formed. Answer in units of mol.
the ratio of the no of molecules in the excited state at the temperature of 213 K to the number of ground state molecules and the percent of the excited molecules at 213 K.?
As a chemist for an agricultural products company, you just developed a new herbicide,Herbigon, that you think can kill weeds effectively. A sparingly soluble salt,
A sample of gas is collected over water at a temperature of 35.0?C when the barometric pressure reading is 625 torr. What is the partial pressure of the dry gas, given PH2O = 42.2 torr?
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