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In order to prepare standard solution of EDTA, pure disodium EDTA dihydrate can be used as a primary standard. How much Na2EDTA x 2 H2O must be weighed to prepare exactly 2 L of 0.0500 M solution? F
How much energy in kilojoules is required to convert 100 mL of diethyl ether at its boiling point from liquid to vapor if its density is 0.7138 g/mL?
Which is the correct mathematical expression for the molar solubility (x) in mol/L of Fe3(PO4)2?
The following volumes were pipetted into reaction flasks and mixed: 10.0 mL 0.0100 M KI, 10.0 mL 0.00100 M Na2S2O3, 20.0 mL 0.0400 M KBrO3, and 10.0 mL 0.100 M HCl. The mixture turned blue in 66.5
What mass in grams of tryptophan is in 0.25 quart of milk, assuming tryptophan accounts for 2.0% of milk by mass and that the density of milk is 1.04 kg/L?
A strong acid is generally used to catalyze the Fischer esterification of carboxylic acids. What two steps in the reaction are accelerated by the presence of strong acid, and what function does the
Calculate the percentage of chlorine in a sodium hypochlorite powder (disinfectant for pools) if 5.0 kg of powder gives off 2.3 kg of chlorine.
A sample of nitrogen gas, N2 is collecyed in a 100 mL container at a pressure of 688 mm Hg and a temperature of 565 degress celsius. How many grams of nitrogen gas are present in this sample.
When pure carbon burns in air, 10.0 kg of carbon react with the oxygen in the air to form 36.7 kg of carbon dioxide. Calculate the percentage of oxygen contained in carbon dioxide.
Describe how you would separate a mixture containing benzoic acid and a neutral substance, benzophenone. Both compounds are insoluble in water and soluble in ether.
Water bubbles up through a hot spring at Yellowstone national park. What method of heat transfer is this?
100 tons of hard lead (98%Pb, 2%Sb) are melted in a steel kettle and then treated with 2 tons of PbO. The products are (1) a slag consisting of PbO and Sb2O3, analyzing 20%Sb, (2) a Pb- Sb alloy of
What is the theoretical yield of carbon dioxide when 56.0 g of methane is burned in a excess of oxygen, according to the equation CH4 2 )2 arrow CO2 2 H2o
Consider the reaction of 5.0 moles of CS2 and 3.0 moles of NaOH according to the following reaction. Calculate the number of moles of Na2CS3, which will be produced after the reaction is completed
When NaHCO3 is heated above 270 degrees Celsius, it decomposes to Na2CO2, H2O, and CO2. Calculate mass of CO2 produced from the decomposition of 59.0g of NaHCO3.
The following quantities of these trace gases were found in a 1.0 gallon sample of air. Calculate number of moles of each gas in the sample:
A 14.0 ice cube is placed into 308 of water. Calculate the tempturature change
Calculate the maximum numbers of moles and grams of iodic acid (HIO3) that can form when 635g of iodine trichloride reacts with 118.5g of water. 2ICl3 + 3H2O --> ICL + HIO3 + 5HCl.
If 2.00 mol of H2 and 1.00 mol I2 are placed in a 2.00 L flask and allowed to reach equilibrium, calculate the concentration of all reactants and products. & ;
Ascorbic acid is often used to keep dried fruits from browning. From what you have learned by doing the experiment, how can you explain the ability of ascorbic acid to function the bleaching agent?
What is the mechanism for the formation of benzoic acid as a result of acetophenone and clorox reacting together?
Calculate the grams of NaOH present in 6.5 mL of a 6.0% (m/v) NaOH
The other contains the indicator phenol red, which turns red in strongly basic aqueous solutions but is otherwise yellow. Which of these steps would cause a color change in both solutions?
The smallest atoms can themselves exhibit quantum behavior. Calculate the de Broglie wavelength of a hydrogen atom traveling 455 m/s.
Find the Qsp when 9 drops of 0.014 M Na2CO3(aq) are added to 25 mL of 0.003 M AgNO3(aq). The solubility product of Ag2CO3 is 6.2 × 10-12. Assume 20 drops per milliliter. Determine whether a prec