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What is the hydronium ion concentration of a 0.20 M solution of an acid with a Ka of 0.000028?
It takes 47 mL of 0.124 M KOH to neutralize 47.8 mL of H2SO4 solution. What is the concentration of the H2SO4 solution? Answer in units of moles/liter
what is the molar mass of glucose if 22.5g gives a freezing point of -0.930 C when dissolved in 250 g of water?
If 76.0 mL of .150 M HCL is needed to neutralize all the NH3 from a 2.25-g sample of organic material, calculate the mass percentage of nitrogen in the sample.
the density of plutonium metal is 19.84 g/cm3 , and the density of plutonium (IV) oxide is 11.46 g/cm3. over a period of 7-10 years, a 2.5-kg sample of plutonium metal stored at Los Alamos National Laboratory in New Mexico was converted to plutoni..
What type of glassware would you use to measure the volume of a .002035 M sodium nitrate
Calculate the pH after 0.020 mol NaOH is added to 1.00 L of a solution which is 0.100 M NH2OH and 0.100 M HONH3Cl.
The inventor proposed the revolutionary design of the new engine based on the heat stored in the ocean. The inventor plan is to mount it on a boat in San Francisco and set off on a journey across the Pacific Ocean. Heat is extracted from the ocean
Calculate the final temperature for 225 g of water, which starts at 20 degree Celcius , after 0.75 grams of biodiesel have to be burned to heat the water
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)?
the electron-state H atom absorbs a photon of wavelength 93.78 nm. To what energy level does the
Find out the molar mass of each of the given gases 1) 2.16 grams of a gas that occupies 1.38L at 665 mmHg
determined its current level of YAN to be 120 ppm N. If each gram of DAP adds 0.21 gram of N to the must, how much DAP is needed?
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