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How many grams of KCOOH are needed to prepare 150 ml a buffered solution of pH 3.85 if the acid concentration, HCOOH is 0.1M?
how many milliliters of H2 will be present after reaction has taken place? b.) how many milliliters of Cl2? c.) how many milliliters of HCl?
what will be the percentage (%) of final solution after mixing 20% 200 gram NaCl solution with 50% 100 gram NaCl solution and addition of 200 gram water into the mixture
There are 3 different possible structures for dibromoethene molecule, C2H2Br2.One of them has no net dipole moment, but the other two do. Draw a Lewis strucutre for each isomer. Include H atoms.
Baking soda (NaHCO3) can be made in large quantities by the following reaction: NaCl + NH3 + CO2 + H2O ---> NaHCO3 + NH4Cl If 9.41g of NaCl reacts with excesses of the other reactants and 3.81g of NaHCO3 is isolated, what is the percent yield of t..
What is the wavelength of an electron (mass= 9.11 x 10^-31 kg) moving with a velocity
A 2.60 mole quantity of NOCl was initially in a 1.50 L reaction chamber at 400°C. After equilibrium was established, it was found that 22.0 percent of the NOCl had dissociated
The solution was boiled to remove CO2, following which the excess HClO4 was back-titrated with 10.12ml of dilute NaOH. In a separate experiment, it was established that 27.43 ml of HClO4 neutralized the NaOH in a 25ml portion. Calculate the molari..
At LCC 5,500 cars commute an average of 15 miles each in cars that get an average gas milage of 19 miles per gallon. How many grams of lead are released each time these cars drive? The answer was 4.342 kg and then 9.5724 lbs (when you multiply b..
The molecule, atracurium, is a very complex drug. Atracurium exhibits a very short half-life (20-min). The products of the fastest inactivation process are shown.
What must be the velocity, in m/s, of a beam of electrons if they are to display a de Broglie wavelength of 1 nm? (the mass of an electron is 9.109x10 -28 g)
What is the origin of the charge neutrality requirement in solids? Why must solids have charge neutrality in the bulk,
Mercury has the density of 13.6 g/cm3. what is the mass of a cylinder of mercury with a tube with an inside diameter of .45 cm and a height of 76.0 cm
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