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Acetylene (C2H2) and hydrogen fluoride (HF) react to give difluoroethane: C2H2(g) + 2HF(g) = C2H4F2(g)
When 4.4 mol of C2H2 and 22 mol HF are reacted in a 12.8 L flask, what will be the pressure in the flask at 7.9°C when the reaction is complete?
Zinc is extracted from its ore by heating with carbon in the blast furnace. How much zinc oxide do you need to make 130 g of zinc?
From the images of the structure of benzil, if the ketone groups are facing opposite directions, you get a net 0 diploe moment because they cancel. But if you have a cis molecule, then they both face the same direction.
A reaction mixture initially contains 2.8 M H2O and 2.6 M SO2. Determine the equilibrium concentration of H2S if Kc for the reaction at this temperature is 1.3 × 10-6.
if a sample of gas has fixed volume, and under a standard atmosphere of pressure, if its temperature is raised from 20 degrees celsius to 40 degrees celsius
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.]
How would you prepare 250mL of a buffer having a pH of 3.60 using 0.500M NaOH and 0.500M of HNO2. Would you calculate the molarities of the conjugate acid and base pair and then somehow get the volumes from that
Identify which gas is in excess and by how much and calculate the volume of nitrogen produced.
What weight of A would be removed by four successive extractions with 25-mL portions of ligroin? How much ligroin would be required to remove 98.5% of A in a single extraction?
What is the boiling point of a mixture composed of 95.0 g HOCH2CH2OH (ethylene glycol) and 205 g H2O? The boiling point elevation constant for H2O is 0.512 °C/m.
Suppose a 5-volt battery is delivering a steady current of 5 A for a period of 4 hours. Calculate the total charge in coulombs that passes through this circuit.
an unknown rectangular substance measures 3.6 cm high 4.21 cm long and 1.17 cm wide. if the mass is 21.3g what is this
portion of that solution is diluted by adding 167 mL of water. What is the final concentration? Assume the volumes are additive.
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