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Calculate the pH of a solution that is 0.25M pyridine, C5H5N and 0.75M in pyridinium bromide, C5NHBr. (Kb for C5H5N= 1.7 * 10^-9)
how much of this chemical would have been measured? Express in terms of measured concentration C (mg/litre) of the filtered sample?
The minimum frequency of light needed to eject electrons from a metal is called the threshold and find the minimum energy needed to eject electrons from a metal with a threshold frequency of 3.27*10^14s^-1.
What is the structure for hexadecanol?, What would explain why it is a solid, rather than a liquid?, How are ethanol, 1-octanol, propane-1,2,3-triol, and hexadecanol similar to their corresponding hydrocarbons (ethane, octane, propane, & hexadecan..
if 294 grams of is allowed to react with 176 grams of according to the following unbalanced equation, how many grams of are produced? How many grams of FeS2 and O2 are left?
An unknown mass of each of the following substances, initially at 22.0^circ C, absorbs 1950 J of heat. The final temperature is recorded as indicated. Find the mass of each substance. a. Pyrex glass (T_f=55.1^circ C. B.sand (T_f=62.3^circ C). C.et..
Calculate the equilibrium constant, K, for this reaction at 298 K. (b) Will Delta G increase, decrease, or stay the same if the partial pressure of NO2 is increased? (c) Calculate Delta G^o at 298K if the partial pressure of NO2 and N2O4 are 0.40 atm..
How many grams of CuCl2 are required to prepare 1220. g of a 1.65% (by mass) CuCl2 solution?
In a gas mixture, the partial pressures are argon 455 , neon 85 , and nitrogen 135 .What is the total pressure exerted by the gas mixture?
apply to NHCl3. A. polar bonds B. nonpolar molecule C. triangular-planar molecule shape D. sp2 hybirdized
Determine the value of Faraday used If the electrolysis was carried out for eighty minutes with a current of four amperes flowing
what will the maximum temperature reached by the resulting solution? [Assume that there is no heat loss to the container, that the specific heat of the final solution is 4.18 J/g*C, and the density of the final solution is that of water.]
What is the boiling point of a solution of benzene containing 0.2 moles of a non volatile solute in 125 grams of benzene given that pure bezene has a boiling point of 80.1
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