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Write equations for the ionization of the following acids. Which ones ionize only slightly?
a) HFb) H2SO3c) CH3COOHd) HNO3
What is the percent yield of a reaction in which 260. g phosphorus trichloride reacts with excess water to form aqueous phosphorus acid (H3PO3) and 127 g HCl?
If the methane contained in 4.00 of a saturated solution at 25 was extracted and placed under STP conditions, what volume would it occupy?
If 85.0 of fluorine-18 is shipped at 8:00 a.m., how many milligrams of the radioisotope are still active if the sample arrives at the radiology laboratory at 1:30 p.m. ?
Write the net ionic equation for the following reactions: a. The precipitation of manganese (II) hydroxide b. The reaction that occurs when sodium fluoride is added to a solution containing iron
Suppose 532 mL of neon gas at 20C and 1.04 atmospheres and 376 mL of SF6 gas at 20C and 0.97 atmospheres are put into a 275-mL flask. If the temperature remains constant, calculate the partial pressure, in atmospheres, of the SF6 gas in the mixtur..
how much energy in kilojoules is required to change 47.6 g of ice at 0 degrees celcius to liquid water at the same temperature in kilocalories?
If the molar enthalpy of water is 6.009 kJ/mol, how much energy is needed for 4.5 moles of ice to melt at STP?
What is the solubility of Ca(OH)2 in water, at the experimental temperature, in grams of Ca(OH)2 per 100 mL of solution?
a solution is prepared by adding 1.60 grams of solid NaCl to 50ml of 0.100M CaCl2. what is the molarity of chlorine ion in the final solution? assume that the volume of the final solution is 50ml
Based on the first and fourth sketches(Part C figure) , what is the density of the block? First sketch shows mass of the block = 50g. Second sketch shows block completely immersed in water(at 20 degree Celsius), mass of block now = 5.6g and densit..
Calculate the temperature of the system once equilibrium has been reached. Assume that Cp,m for Au and H2O is constant at its value for 298K throughout the temperature range of interest.
a beaker containing 250g of water is heated from 23 degrees C to 100 degrees C. what is the heat gain in calories?
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