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How many grams of dry NH4Cl need to be added to 1.60 L of a 0.700 it M solution of ammonia, NH_3, to prepare a buffer solution that has a rm pH of 8.62? K_b for ammonia is 1.8 * 10^{-5}
Determine which monomer will have the higher degree of polymerization (DP) and by how much?
If 3.30ml of vinegar needs 45.0ml of 0.130M NaOH to reach the equivalence point in a titration, how many grams of acetic acid are in a 1.10qt sample of this vinegar?
Gas stoichiometry and Percentage of calcium carbonate in the sample
A beaker with 185 mL of an acetic acid buffer with a pH of 5.00 is sitting on a benchtop. The total molarity of acid and conjugate base in this buffer is 0.100 M. A student adds 6.70 mL of a 0.440 M HCl solution to the beaker.
The volume of a gas is 5.0L when the temperature is 5.0C. If the temperature is increased to 10.0C without changing the pressure what is the new volume?
What is the geometry and hybridization of the carbonyl carbon in carboxylic acids and their derivatives.
When (R)-2-butanol is treated with TsCl in pyridine,the product formed and Classify the reaction
Calculate the pH at the equivalence point for the titration of a solution containing 1250.0 mg of hilariamine (MW = 104.75 g/mol, Kb = 7.1×10-4) with 0.1000MHCl solution.
If a sample of 0.190 grams of KCN is treated with an excess of HCL, calculate the amount of HCN formed, in grams.
How many grams of liquid methanol (CH3OH) are needed to heat 425 mL of water from 18 oC to 43 oC by combustion with oxygen.
A sample of vanadium haveing 5.67 grams of mass upon heating combined with oxegen of 4.45gramsto make vanadium oxide. Determine the emperical formula for this compound?
determine the initial concentration - Constant rate is 3.20×10-4 M/s for a zero-order reaction. concentration has dropped to 9.00×10-2 M after 60.0 seconds
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