Calculating the fraction of atoms in a sample
Calculate the fraction of atoms in a sample of argon gas at 391 K that have an energy of 12.7 kJ or greater
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If a sodium hydroxide solution were added to a solution containing lead(II) ions, sodium ions, nickel(II) ions and potassium ions, which ion(s) would remain in the supernatant?
Acetic acid has a ka= 1.78x10^(-5). Determine the pHof a 0.100 M solution.Calculate the hydronium ion ([H30+)] concentration of a 0.25 M solution of benzoic acid, HC7H5O2, Ka= 6.46x10^(-5).
a new solid octahedral complex has been synthesis containing only chloride ans ammonia ligands. when 9.64 *10^-4 moles of this complex is dissolved into 425 ml of water , you find out that 19.22 ml of .1000 HCl is needed to reach the titration end
How many grams of aspiring were lost in the washing process you used to purify the product, assuming you used 50 mL of water for washing? The solubility of aspiring in water is 0.33 grams per 100 mL at room temperature?
What percentage of the original Ag+ remains in solution when 180 mL 2.10×10-2 M AgNO3 is added to 240 mL 3.76×10-2 M K2CrO4?
Historically, risk management has generally been limited to pure loss exposure, including property risks, liability risks, and personnel risks. Recently many companies have begun to take a more holistic management approach to = pure and speculativ
A solution is prepared by dissolving 307 g of sucrose (C12H22O11) in 684 g of water. What is the vapor pressure of this solution at 30°C? (The vapor pressure of water is 31.8 mmHg at 30°C.)
Assume you dissolve 2.56g of malic acid, C4H605 in half a liter of water (500g). Calculate the molarity, molality, mole fraction, and weight percentage of acid in the solution.
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Point of use cleaning of used instruments MUST be performed immediately following the procedure in the following location