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Write the net ionic equations that account for the pH values of: 0.1M NH4Cl (pH 6.25), 0.1M NaC2H3O2 (pH 8.24), 0.1M NaCO3 (pH 10.30), 0.1M NH3 (pH 9.95).
How many milliliters of 0.200 M NaOH are needed to neutralize 100. mL of 0.100 M HCl
A 325 mL sample of solution contains 25.3 grams of CaCl2. Calculate the molar concentration of Cl- in this solution.
Based on standard reduction potentials, would you expect copper metal to oxidize under standard conditions in the presence of oxygen and hydrogen ions
If 37.0 grams of hydrogen sulfide gas (H2S; MM = 34.08 g/mol) react with 37.1 grams of oxygen gas (O2, MM = 32.00 g/mol), what is the mass of sulfur dioxide (SO2, MM = 64.06 g/mol) gas produced?
A gaseous mixture of O2 and Kr has a density of 1.114 g/L at 431 torr and 325 K.What is the mole percent O2 in the mixture.
A student mixes 347 mL of water and 254 mL of 8.70 x 10-5 M greenfood dye solution. What is the concentration of this new dilute solution of green food dye?
A lithium atom is contained in a cubic well 10 nm on a side. (a) Calculate the energy (joules) required to achieve the transitions from the ground state to the first excited state for this system
Consider the following unbalanced reduction half equation. MnO4-+H=+e- > Mn2++H2O. How many H= are needed for the balanced half-equation.
At what temperature will a gas be at if you allow it to expand from an original 456 mL at 65 celcius to 3.4 L?
what solution will have the lowest boiling point?
At a certain temperature and pressure 1.4 L of N2 reacts with 2.1 L of O2. If all the N2 and O2 are consumed, what volume of N2O3, at the same temperature and pressure, will be produced?
the IUPAC name for the aniline C6H5NH2 with both CH3 and CH2CH2CH3 attached to the nitrogen molecule?
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