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How many moles of H+ ions are present in 1.9 L of 0.48 M hydrobromic acid.
CaCN2 + 3 H2O → CaCO3 + 2 NH3 . How much NH3 is produced if 187 g of CaCO3 are produced?
Suppose the energy level of an electron with quantum number n was proportional to n instead of 1/n^2, E= -2.18 x 10^-19 J
Calculate the wave-lenght for the following reactions: NO2 dissociating in NO and O2 and NO2 dissociating in N + 2O, given: DeltaHf: NO2
A sample of h20 with a mass of 46.0 grams has a temperature of -58 degrees celcius. how many joules of energy are necessary to heat the steam from 100 degrees celsius to 114 degrees celcius.
How many millilitres of 0.200 M HCl must be added to 50.0 mL of a 0.200 M solution of NH3 in order to prepare a buffer that has a pH of 8.60? Kb of NH3 = 1.8 x 10-5.
Comparing potassium nitrate (KNO3) and sodium chloride (NaCl), which chemical's solubility (in water) is most affected by change in temperature.
Methane and hydrogen sulfide form when 36g H2 reacts with carbon disulfide. calculate the percent yield if the actual yield of CH4 is 69.8 g
2K(s)+2H2O(l)--> 2KOH(aq) + H2(g) A 5.00 g chunk of potassium is dropped into 1.00 kg water at 24 deg C. What is the final temperature of the water after the preceding reaction occur.
A 0.0100 L sample of H2SO4 (Sulfuric Acid) was titrated with 0.150 M NaOH. It took 23.3 mL of NaOH from the buret -- that's 0.0233 L -- to reach the titration endpoint.
A particular first-order reaction has a rate constant of 1.35 × 10^2 s-1 at 25°C. What is the magnitude of k at 75°C if Ea = 85.6 kJ/mol?
C2H4(g) + H2O(g) C2H5OH(g) 1 mol C2H4, 1 mol H2O at 355K and 1 bar. Using equilibrium constant approach, calculate the equilibrium extent of reaction and the mole fractions
Calculate the equivalent number of moles of potassium permanganate? 3) calculate the clarity of the potassium permanganate solution?
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