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If you mix 25.0 mL of 0.10 M methylamine (CH3NH2 Kb=3.6x10^-4) with 25.0 mL of 0.10 M benzoic acid (C6H5COOH Ka=6.3x10^-5), will the resulting solution be acidic, basic or neutral?
What is the molarity of a solution which contains 58.5g of sodium chloride dissolved in 0.500 L of solution?
Write the net redox reaction.
A room contains 46 of air.How many kilowatt-hours of energy are necessary to heat the air in the house from 9 to 30? The heat capacity of air is 1.03.
Commercial concentrated aqueous ammonia is 28% NH3 by mass and has a density of 0.90 g/ml . What is molarity?
Provide a structure for the following compound: UV spectrum: ?max = 272 nm (? = 39,500); EI mass spectrum: m/z = 129 (molecular ion and base peak); IR: 2200, 970 cm-1;
Calculate the change in temperature for 1.30 g of CaCl2 dissolved in 25.0mL of H2O. Assume that the calorimeter absorbs no heat. (ie C cal=0)
How much ammonium hydroxide is needed to react completely with 75.0g of copper (2) nitrate in a double replacement reaction.
How many grams of ammonia can be produced ? How much of the excess reactant is left over?
For a certain glass electrode, the selectivity coefficient for Na+ relative to H+ is 1.0 x 10-12. The electrode is calibrated with NBS standard buffers 6.86 and 9.18,
Use this information to compare how long it will take to obtain molecular scale mixing of such a gas over i) distance 1*10^-4 m and ii) 10m
Describe how chemical labeling and crystal structures can be used to determine residues important
Calculate the heat released when 71 g of steam at 116 degrees C is converted to water at 39 degrees C.
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