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Suppose that ammonia (a monoprotic base), applied to a field as a fertilizer, is washed into a farm pond containing 3.0 × 106 L of water. If the pH of this pond is found to be 9.81, what volume of liquid ammonia found its way into the pond? [Given: Kb(NH3) = 1.8 × 10-5; the density of liquid ammonia is 0.771 g/cm3]
Calculate the minimum energy a photon must have to produce an electron hole pair in an extrinsic semiconductor of band gap 1.0 electron volts.
For alloys of two hypothetical metals A and B. Find out composition of phase boundary (or solubility limit) for both and phases at this temperature.
Determine what is the density of the oxygen gas in the full bottle If A cylindrical gas lecture bottle has internal dimensions of 18.0 cm in diameter and a height of 49.0 cm and weighs 1.75 kg when empty.
100 mol/h of n-octane is burned in 80.0% excess air to 95.0% conversion. What is the molar flow rate of N2 in the stack gas if The n-octane is converted to a mixture carbon monoxide, carbon dioxide, and water, where the ratio of CO2 to CO is 4:1?
How much energy in kJ must be absorbed to heat up a volume of ocean water 2 m high by 20 km wide by 30 km deep by 3°C.
Determine the value of pH of given solutions that are (a) a solution that is 0.40 M CH3CO2H, (b) a 0.40 M CH3CO2H solution, (c) 0.20 M NaCH3CO2. And explain your answer too?
An Ionic Compound has the formula M4(NO3)2(PO4)2. What is the net charge on the metal ion M in this Compound.
A volume of 725 mL of a gas is collected at 105 degrees C and 746 torr. The gas sample weighs 1.92 grams. what is the gas.
Write balanced chemical equations for the following reactions.
Compute the mass of an electron if the difference in the mass of 100 moles each of sodium atoms and sodium ions is 5.48002 grams?
Assume a wind turbine with a hub 50 meters above the ground, a rotor diameter of 60 meters and a wind-conversion efficiency of 25 percent. The turbine operates in an area with an average wind-power density of 700 watts/sq meter at 50 meters altitude.
an aerosol spray can with a volume of 270 ml contains 3.2 g of propane gas propellant. what is the pressure in the can at 20 c.
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