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A solution of volume 0.500L contains 1.68g NH3 and 4.00g (NH4)2SO4 . How many milliliters of 12M HCl must be added to 0.500 L of the original solution to change its pH to 9.00?
What is the pOH of a 0.0054 M KOH solution? 2. Rank H3PO4, H2PO4^-, and HPO4^2- in order of increasing acid strength.
You need to prepare 100.0 mL of a pH=4.00 buffer solution using 0.100 M benzoic acid (pKa = 4.20) and 0.160 M sodium benzoate. How much of each solution should be mixed to prepare this buffer
at 0.967 atm the height of mercury in a barometer is 0.735 m. if the mercury were replaced with water what height of
question hydrogen peroxide h2o2 decomposes according to the equation h2o2liquid h2o liquid 12o2 g from the following
Magnesium burns in oxygen gas to produce magnesium oxide. What mass of magnesium will react with a 0.25 L container of oxygen gas at 80oC and 770 mmHg?
use a solid line to represent the correct calibration line and a dotted line for the line with the systematic error.) Also discuss the advantages and disadvantages of spectral methods of analysis.
An unknown radioactive substance has a half-life of 3.20 hours. If 46.0 g of the substance is currently present, what mass was present 8.00 hours ago
A 1L steel tank is fitted with a safety valve that opens if the internal pressure exceeds 850 torr. It is filled with helium at 23 oC and 0.991 atm and placed in an oil bath. To what temperature (oC) will the oil bath need to be heated to first ..
Standard Spectrophotometry experiment. I have absorbance, path length (1) and I need to determine the concentration of an unknown based on my calibration cure. I need the Extinction Coefficient. Is that just the slope of by calibration curve? Or i..
what is the limiting reactant when 3.41g of lithium with 2.79g of copper II nitride?predict the products, write a balanced equation, calculate the limiting reactant.
Determine which metal will reach the lowest temperature If the same amount of heat is added to both the metals?
Neglect the absorption of other waste gas components into the water, and the evaporation of water into the waste gas stream. What rate is NH3 is being removed from the feed gas?
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