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You need to produce a buffer solution that has a pH of 5.38. You already have a solution that contains 10. mmol (millimoles) of acetic acid. How many millimoles of acetate (the conjugate base of acetic acid) will you need to add to this solution? The pKa of acetic acid is 4.74.Express your answer numerically in millimoles.
A bicycle tire is filled with air to a pressure of 85.0 psi at a temperature of 19°C. Riding the bike on asphalt on a hot day increases the temperature of the tire to 58°C. The volume of the tire increases by 2.8%. What is the new pressure in the ..
What mass of water would need to evaporate from your skin in order to dissipate 1.7 × 105 J of heat from your body? H2O(l) → H2O(g) ΔHvap = 40.7 kJ/mol
Dibenzoylmethane is not a methyl ketone, but it gives a positive result in the iodoform test when treated with NaOH and I2. Explain this result.
what is the molar mass of the unknown liquid in g/mole?
Calculate the Ki for a competitive inhibitor (I) form the following data. (Slope of reciprocal plot value: 0.1, 0.35, 0.5, 1.0, 1.5, 2.0)
Explain this theary and how the shapes of simple molecules and polyatomic ions can be worked out using it. you will need to illustrate your account with a number of diagrams, in particular showing the difference typical shapes of simple molecules ..
The average concentration of calcium ion in seawater is 412 mg of calcium ion per kg of seawater. What is the molarity of the calcium ion if the density of the seawater is 1.025 g/mL?
What would the theoretical yield in moles be and how would you calculate that? What would the theoretical yield in grams be and how would you calculate that?
Calculate the minimum chloride ion concentration needed to initiate precipitation of PbCl2 from a solution that contains 0.01M Pb^2+ (aq).
How much energy (in kilojoules) is needed to heat 3.60 of ice from -14.5 to 26.0? The heat of fusion of water is 6.01, and the molar heat capacity is 36.6 for ice and 75.3 for liquid water.
If a solution containing 17.76 g of mercury(II) perchlorate is allowed to react completely with a solution containing 5.102 g of sodium sulfate, how many grams of solid precipitate will be formed.
If 5.78 mol of ethane (C2H6) undergo combustion according to the unbalanced equation C2H6 + O2 = CO2 + H2O how much oxygen is required?
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