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if the solubility of AgNO3 at 40oC is 211 g per 100 g of water, what mass of this solute can be dissolved in 350 g of water at the same temperature?
Iron is obtained commercially by the reaction of hematite (Fe2O3) with carbon monoxide. How many grams of iron are produced if 25.0 moles of hematite react with 30.0 moles of carbon monoxide?
Calculate the moles of H2 present in this gas sample. . 9. 1.0 gram of water at 25 C is heated to 100 C, at which point it boils at an atmospheric pressure of 1 atm and is vaporized.
A 10.00 mL sample of this stock solution is added to 59.00 mL of water. Calculate the concentration of ammonium ions and sulfate ions in the final solution.
A 355 ml container holds .146g of Ne and an unknown amount of Ar at 35 degrees C and a total pressure of 26 mmHg. Calculate the moles of Argon present.
What key metabolic substance is formed directly from catabolism of all three major classes of foods (carbohydrates, lipids, and proteins)?
At constant pressure, in which of the reactions is work done by the system on the surroundings? By the surroundings on the system? In which of them is no work done?
A sample of gas with a mass of 1.80 g occupies a volume of 921 mL at a pressure of 733 torr and a temperature of 24 C. What is the molar mass of the gas?
CH3 H Cl Draw the two stereoisomeric Markovnikov addition products of this reaction. Are both products chiral? Explain. Will the reaction mixture rotate plane polarized light? What is the stereochemic
This mixture is also heated to 350 C. After equilibrium is reached will there be any difference in the composition of the mixtures in the two flasks?
Calculate the solubility of potassium bromide at 23 degrees celuius.assume that the solubility increases by an equal amount for each degree between 20 and30 degrees
Consider the trioxane equilibria illustrated below (trioxane itself is a hypnotic agent used therapeutically). Use PC Model to compute the 298 K heats of formation of the monomers and the trioxanes in
when aluminum is heated in oxygen, aluminum oxide is formed. What weight of the oxide can be obtained from 25.0g of the metal.
Water is added to 25.0 ml of .716 MKNO3 solution until the volume of the solution is exactly 500 ml. What is the concentration of the final solution?
A 1.00-L gas sample at 100.°C and 589 torr contains 50.0% helium and 50.0% xenon by mass. What are the partial pressures of the individual gases?
a piece of matal with a specific heat capacity of 0.225 j/g degrees c changes in temperature from 21.0 degrees c tp 51.0 degrees c when 675 j of energy is pplied to it. what is the mass in grms of t
Chlorine is widely used to purify municipal water supplies and to treat swimming pool waters. Suppose that the volume of a particular sample of gas is 8.70 l at 895 torr and 25 Celsius. How many gra
Fun activities that expose you to real-world chemistry and biology. Exposure to real-life research and career opportunities in academia and industry. Student-selected topics Do free radicals in food c
A solution contains 29 g of sucrose (C12H22O11), a nonelectrolyte, dissolved in 929 g of water. What is the boiling-point elevation?
Boron has two naturally occurring isotopes, 10B (19.9%) and 11B (80.1%). Although the B2 molecule does not exist naturally on Earth, it has been produced in the laboratory and been observed in stars
Sodium reacts with hydrogen gas. How many grams of sodium are needed to react with 2.50 L of hydrogen measured at STP? What is the balanced chemical equation for this reaction?
Chemical Engineering/Environmental Engineering 100 Assignment #1 1. Due: September 20, 2002 9:30 a.m. A rocket uses 110L of liquid oxygen as oxidizer in 43s.
What is the molarity of a sulfuric acid solution if 40.2 mL of this solution is required to titrate 6.50 grams of sodium hydrogen carbonate?
Twenty grams of a solute are added to 100g of water at 25C. the vapor pressure of pure water is 23.76 mmHg, the vapor pressure of the solution is 22.41 torr. Calculate the molar mass of the solute.
If solubility of a particular solute is 10g/100g H2O at 20 degrees C, which of the following solution concentrations would represent a supersaturated aqueous solution of that solute?