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Determine the magnetic field B a distance z above the center of a circular loop of radius, r. After that show that the magnetic field at a given point inside a solenoid of n turns/unit length as well as carrying a current I is: B= 2 n I (cos1 + cos2)
Explain how the carbonate system in natural waters provides buffering capacity
Determine the extent of reaction and amounts of B & Z and A reaction having time independent stoichiometry follows the equation
The molar mass of CsCl is 2.88 times the mass of NaCl, and the edge length of the unit cell for NaCl is 1.37 times the edge length of the CsCl unit cell. Determine the ratio of the density of CsCl to the density of NaCl.
If 43.2 ml of 0.105 M KMnO4 were required to reach the endpoint of a 14.8g bleach sample, what was the perrcentage of H2O2 in the sample?
What mass of solid sodium formate (of MW 68.01)must be added to 115 mL of 0.57 mol/L formic acid (HCOOH) to make a buffer solution having a pH of 4.16? Ka = 0.00018 for HCOOH.
The initial concentrations of Pb2+ and Cu2+ are 5.20×10-2 M and 1.60 M, respectively. What are the concentrations of Pb2+ and Cu2+ when the cell potential falls to 0.370 V
Calculate the concentration of HPO42- ions. (pKa‘s of phosphoric acid - 2.15; 7.2 ; 12.3).
What volume of 0.450M MgSO4 x 7H2O (magnesium sulfate heptahydrate) is needed to react with HPO4^2- in 8.25 grams of fertilizer
A hot air balloon occupies a volume of 978 L at a temperature of 27 °C. What is the temperature, in °C, if the volume is decreased to 873 L
The hottest temperature yet recorded in Phoenix AZ was 122 dgrees F what is the temperaturein degrees C and K
what hydrogen ion concentration should be required to dissolve 0.10m mgf2 if the ksp for magnesium fluoride is 6.8x10-9
The pH of a sample of rain is found to be 4.0. Calculate the percentage of HSO4- that is ionized in this sample, given that the acid dissociation constant for the second stage of ionization of H2SO4 is 1.2E-2.
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