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how many grams of calcium carbonate , CaCO3, do you need in an antacid tablet to neutralize 20 ml of stomach acid ? (stomach acid is 0.1 m HCI. there are 3.65 g of HCL in 1 l of stomach acid or 1 g of HCL in 274 g of stomach acid)
Calculate the [H3O+] concentration in 0.45 M solution of barbituric acid, HC4H3N2O3. Ka for barbituric acid is 1.0 X10 ^-5.
Determine the entropy change when 5.60 mol of HCl(l) boils at atmospheric pressure with the following information
Calculate partition coefficient of caffeine between water and each of two organic solvents. (c) Can you use diethyl ether to extract caffeine from water? Why/why not.
When 28 mL of a 430 mL stock solution containing 2.3 M AlCl3 is diluted to 114 mL, how many moles of Al3+ are in the new solution?
If the absolute temperature of a gas is doubled, what happens to the root-mean-square speed of the molecules?
Draw three possible structures for the B3H8- ion. Clearly indicate any three-center bonds. Which structure is most plausible (considering molecular orbital theory)
Explain the hazards associated with 1.0 moles of Ch3COOH solution, 0.10 moles of BaCL2 sloution, and 0.10 moles Na2C2O4 solution?
A researcher conducts an experiment to determine the work function of a palladium surface. She fires a laser with a wavelength of 254 nm at a certain time and observes electrons hitting a detector
A diprotic acid, H2A, has pKs 8.4 and 3.5. 50.0 mL of 0.10M of the diprotic acid, H2A, is titrated with 0.20 M NaOH. What is the Ve (i.e. the first equivalence point)?
What is the adipic acid production from cyclohexanol and cyclohexanone reaction by products
Starting with the previous noble gas, write the condensed ground-state electron configuration of an atom of the following elements.
Calculate the amount of heat required to heat a 3.5 kg gold bar from 21 degrees celsius to 67 degrees celcius.
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