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How many moles of sodium chloride (NaCl molar mass 58.44 g/mol) are contained in a 1 lb box of table salt?
What is the pH of a solution obtained by mixing 50mL of 0.02 M sodium acetate with 40mL of 0.01 M HCl.
Calculate the pH at the points in the titration of 40.00 mL of 0.425 M NH3 for the reaction below. NH3(aq) + HNO3 ? NH4+(aq) + NO3?(aq) For NH3, Kb = 1.8x10-5.
a line in the emission spectrum of an atom occurs at a wavelength of 560 nm. what is the energy difference between the
in the reaction below, 3.71 atm each of H2 and Br2 were placed into a 1.00 L flask and allowed to react: H2(g) + Br2(g) 2 HBr(g) Given that Kc = 84.1, calculate the equilibrium pressure of HBr.
A different nonscientist is going to make a new semiconductor III-V solid. But for reasons to discussed later, the scientist is going to use tow different elements for the III-atom part,
If the second data point occurred after a total addition of 4.00 mL of NaOH at t = 219 s, calculate the intial rate of reaction in units of M/s.
Suggest a reason why the cyclic intermediate in the formation of methyl-e-4-methoxycinnamte from p-anisaldehyde, might have two important groups in a trans relationship
Ethanol is a common additive to gasoline. Using the provided equation, determine how many grams of ethanol are needed to provide 293 kJ of heat.
Calculate the reaction rate for each of the three trials. Determine the order of the reaction with respect to NO2.
Because HCl and NaOH are a strong acid and base respectively, they dissociate completely and the pH of the solution is dependent only on the excess acid or base in the beaker at that point in the titration.
If the elements symbol are the same for those 36 elements as they are in our universe, what would the noble gases be. 2. Which elements contain first d electron.
which of the following reactions are redox reactions? for those reactions that are redox reactions identify the
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