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A chemist produces 460 mL of oxygen gas at - 43 °C and constant pressure. To what Celsius temperature must the oxygen be warmed in order for it to have a volume of 600 mL?
Calculate the pressure (in atmospheres) exerted by 23.93 g of H2O at 36.11 °C in a 1.00 L container. The van der Waals constants for H2O are a = 5.460 L2*atm/mol2 and b = 0.03050 L/mol.
an iron sample contains fe203 and other impurities .a 752g sample of impure iron ore is heated with excess carbon producing 453g of pure iron in the reaction and that the reaction is 100% efficient
If the sample reacted completely and produced 1931 mL of hydrogen sulfide at 29.82 °C and 759.7 mm Hg, what was the mass percentage of CdS in the mixture?
The level in the arm connected to the container is 675.9 mm in height lower than the level in the arm open to the atmosphere?
What is the theoretical yeild in grams of ethanol from the fermentation of 59.5 g of glucose? If the reaction produced 23.4 of ethanol, what was the percent yield?
What was the pressure in mm Hg inside a gas cylinder at 31.42 °C if the tank volume was exactly 50 L and it contained 1148 grams of the He?
A solution contains 116 mg of fructose (molar mass = 180.16 g mol-1) in 1.000 liter of solution. What osmotic pressure if the temperature is 26.0 °C?
From previous measurements, the heat capacity of the bomb calorimeter is known to be 10.6 kJ/C. What is the mass percent of naphthalene in the sample?
how many molecules of water are produced if 2.0 grams of sodium sulfate are produced in H2SO4 + 2NaOH = 2H20 + Na2SO4?
What volume will it have when it reaches an altitude where the temperature is -33 Celsius and the pressure is 0.65 atm?
The solubility of gold chloride (AuCl3) in pure water is 1.0 x 10-6 moles per liter. Calculate the solubility product constant of gold chloride in water.
What are the two steps in the Experimental Procedures that are incorporated to reduce the loss of the calcium oxalate precipitate. Identify the steps in the procedure and the reason for each step.
calculate the work done on a closed system consisting of 50 g of argon assumed ideal, when it expands isothermally and reversibly from a volume of 5 L to 10 L at a temperature 298.15k.
Calculate the pH for each of the following cases in the titration of 50.0 mL of 0.210 M HClO(aq) with 0.210 M KOH(aq).
A chemical reaction takes place in a container of cross-sectional area 50.0 cm2. As a result of the reaction, a piston is pushed out through 15 cm against an external pressure of 121 kPa. Calculate
A 14.045 g aliquot of this solution is then titrated with 0.1043 M HCl. It required 29.18 mL of the HCl solution to reach the methyl red endpoint. Calculate the weight percent NH3 in the aqueous was
A positive cell potential indicated that the chemical reaction in the cell can be used to generate electrical work. Can this reaction be used to generate work?
what is the % composition of KHP in the impure sample? (Assume all impurities in the KHP sample do not participate in acid/base chemistry)
Its vapor took 1.77 times as long to effuse as the same amount of CO2 under the same conditions of temperature and pressure. What is the molar mass of the phosphorus chloride?
When nylon forms, adipic acid (a diacid) reacts with 1,6-diaminohexane to eliminate a water molecule and form the polymer. What type of polymerization is this and why?
Calculate the number of moles of aluminum atoms that will react with 2.46 mol copper chloride according to the equation 2Al(s)+3CuCl2(aq)->2AlCl3(aq)+3Cu(s)
How many grams of CaH2 are needed to generate 145 L of hydrogen gas if the pressure of H2 is 825 mm Hg at 21.0°C?
how many grams of glucose must be dissolved in 563 grams of ethanol to prepare a 2.40x10-2 m solution?
What is the energy in joules of a mole of photons associated with red light of wavelength 7.00 ´ 102 nm (c = 3.0 x 108m/s; h = 6.63 x 10-34 J s; nA = 6.022 x 1023/mole)?