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Determine the molar concentration of Na+ (aq) in a solution that is prepared by mixing the 10 mL of a 0.010 MNaHCO3 (aq) solution with the 10 mL of a 0.010 MNa2CO3 (aq) solution?
The wires are each 75.0 cm long and encompass a mass of 5.50 gram. When both of them are plucked at the center, determine the frequency of the beats which they will generate if vibrating at their ba
47.06 mL of 0.500 M AgNO3is added to the 270.00 mL of water which contains the 5.832 gK2CrO4. A red precipitate of Ag2CrO4 forms. Determine the concentration, in mol/L, of unprecipitatedCrO4
A series combination of a resistor and a capacitor are joined to a 100 V rms, 60 Hz ac source. When the capacitance is 0.80 uF and the rms current in the circuit is 28.4 mA, determine the resistance
Determine the binding energy of an electron to the metal surface? A metal has a threshold wavelength, for the onset of the photoelectric effect, of 781 nm.
Assume that the total field is zero exactly 11 cm above a straight, long, horizontal wire which carries a constant current. Determine (i) the magnitude of current (in A) and (ii) the angle among the
The compound arsenic acid (H3AsO4) behaves in much the same manner as phosphoric acid. Lead arsenate (Pb3 (AsO4)2) is only slightly soluble in water. Determine the mass balance equation for th
Estimate the conditional formation constant Kf' for the formation of an EDTA complex with the copper (II) at a pH of 5.00, if log Kf = 18.80
The clothing producer has some pure silk thread and some thread which is 85% silk. How many kilograms of each should be woven together to make 75kg. of the blend which is 96% silk?
A bomb of 0.50 kg is sliding all along an icy pond (frictionless surface) having a velocity of 2.0 m/s to the west. The bomb explodes into two pieces. After the explosion, a piece of 0.20 kg moves s
Identify the 90% confidence intervals for the carbohydrate content. The glucose content of a glycoprotein is calculated to be10.5, 10.7, 11.0, 9.9, and 10.6 g of the carbohydrate per 100 g of prote
Determine the binding energy of an electron to the metal surface when a metal has a threshold wavelength, for the onset of the photoelectric effect, of 781 nm.
An uranium nucleus of mass 238 u, primarily at rest, experiences radioactive decay. After an alpha particle of mass 4.0 u is emitted, the remaining nucleus is thorium of mass 234 u. When the alpha p
Determine the numbers of grams of SiCl4 are obtained in the reaction of 2.8 g of silicon with excess chlorine? In the direct reaction of silicon with the Cl2 the yield of SiCl4 is 50 pe
Calculate the charge balance equation for this system when a solution contains a 0.100 molar Fe(NO3)3 and 0.100 molar CaCl2.
The actual reaction mixture is 63% KClO3, 31%Sb2S3, and 6% P4, which means there is a slight excess of both potassium chlorate and phosphorus.
It takes the freight train 2 hours longer to travel 200 miles than it takes the express train to travel 280 miles. Rate of express train is 20 miles per hour greater than rate of freight train. Dete
Determine the mathematical equation which represents the solubility product when the insoluble compound Fe2S3 is dissolved in the water?
Analyze the partial pressure of ozone and the number of ozone molecules per liter of air if the temperature and pressure were 20.0°C and738 mmHg, respectively. On a smoggy day in a certain city
1 hour later a second bus leaves same station, traveling east at the rate of 48 mile per hour. At what time will two buses be 274 miles apart?
If the phosphorus is present as phosphate, PO43-, determine the corresponding molar concentration of phosphate. Phosphorus is present in the seawater to the extent of 0.07 ppm by mass.
Consider the reaction N2 (g)+ O2(g)ó 2NO(g) when given ΔG0 for the reaction at the 250C is 173.4 kJ/mol Determine the standard free energy of formation of NO.
Determine what average force is essential to bring a 49.5 kg sled from rest to a speed of 3.2 m/s in a period of 19.6 s? Suppose frictionless ice.
The Monorail car traves 100 miles in 50 minutes less time than it takes and automobile to travel same distance. Determine speeds of two vehicles if monorail goes 20 mph faster than automobiles.
How can estimate the functional groups for Enol and how they look like and also determine the functional groups for Enolote ion and how they look like?