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How many grams of a stock solution that is 85.5 percent H2SO4 by mass would be needed to make 150 grams of a 45.0 percent by mass solution? Show all of the work needed to solve this problem.
The vapor pressure of chlorine dioxide (ClO2 ) is 155 Torr at -22.75 ? C and 485 Torr at 0 ? C. What is the normal boiling point of chlorine dioxide?
Find out the minimum concentration of the precipitating agent on the right to cause precipitation of the action from the solution on the left.
what volume of 0.200 m hno3 is needed to titrate 38.7 ml of 0.175 m naoh? 2 if 42.5l of 0.45 m hcl is titrated with
Predict the order of elution for the silica gel adsorption TLC separation of the mixture containing benzyl alcohol, benzaldehyde, and benzoic acid using methylene chloride solvent. Explain
A 347 mL container holds 0.146 g of Ne and an unknown amount of Ar at 35°C and a total pressure of 630. mmHg. Calculate the moles of Ar present.
Using the periodic table, arrange the atoms in each of the following sets in order of increasing electronegativity: a) CL, F, Br; b) B, O, N; c) Mg, F, S
Arrange the following in order of decreasing acidity. I. benzoic acid (C6H5CO2H) II. benzyl alcohol (C6H5CH2OH) III. phenol (C6H5OH)
an oxygen tank contains oxygen at a pressure of 70 kpa. when the pressure drops to 36 kpa the temperature increases
Explain the rate of effusion of oxygen gas is twice the rate of effusion of an unknown gas under the same conditions of temperature and pressure. Explain what is the molar mass of the unknown gas?
Combustion analysis of 1.200 g of an unknown compound containing carbon, hydrogen, and oxygen produced 2.086 g of CO2 and 1.134 g of H2O. What is the empirical formula of the compound
Balance equation. What is the percent yield if 122 grams of SiO2 are made from 246 g of Cr2O3 by the following equation. Si(s) + Cr2O3(s) - - - - > SiO2(s) + Cr(l)
How many grams of hydrogen gas are produced upon complete reaction of 4.6 moles of sodium with water? What assumption must you make concerning the water? Sodium oxide is the other product.
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