How many grams of sodium formate nacho2 would have to be
How many grams of sodium formate, NaCHO2, would have to be dissolved in 1.1 L of 0.20 M formic acid (pKa 3.74) to make the solution a buffer for pH 3.82
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A roadway is to be designed on a level terrain. The roadway is 500 ft. Six Cross Sections have been selected at 0 ft, 100 ft, 200 ft, 300 ft, 400 ft, and 500 ft. . The cross sections have areas of 130 ft2, 140 ft2, 70 ft2, 110 ft2, 80 ft2, and 25
Calculate the amount of water (in grams) that must be added to each of the following substances to produce the indicated solution 8.10g of urea(NH2)2CO in the preparation of 21.8 percent by mass solution 30.4g MgCl2 in the preparation of a 4.8 per
The packed tower was 30 cm in diameter with sampling ports located at packing depths of 0,2,4,6,8,10, and 12 meters. The loading of water to the tower was 0.039 m^3/(m^2/s), and the temperature of groundwater was 10 degrees celcius.
A coil of wire is connected to an ideal 12.0-V battery at t = 0. At t = 14.2 ms, the current in the coil is 210 mA. calculate the inductance of the coil
An Electrostatic Precipitator must treat 500,000 acfm with 99% efficiency. Assuming an effective drift velocity of 0.4 ft/sec, calculate the required plate area in ft^2, and the number of plates if each is 20 ft tall by 10 ft long, and there are 4
What is the pH of a 0.17 M solution of oxalic acid, H2C2O4. The Ka1,2 values of oxalic acid are 5.6 x 10-2 and 5.4 x 10-5.
A 45.2-kg girl is standing on a 143-kg plank. Both originally at rest on a frozen lake that constitutes a frictionless, What is the girls velocity relative to the ice surface
A 60 kg bicyclist rides his 9.8 kg bicycle with a speed of 16 m/s. What is the magnitude of the braking force
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