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When a magnetic sector instrument was operated with an accelerating voltage of 2500 V, a magnetic field of 0.4 Tesla was required to focus on the CH4+ on the detector.
a) What range of magnetic field strength would be required to cover the mass range between 16 and 625, for singly charged ions, if the accelerating voltage is held constant?
b) What range of accelerating voltages would be required to cover the mass range between 16 and 625, for single charged ions, if the field strength is held constant?
A solution of I2 was standardized with ascorbic acid. Using a .1000 g sample of pure ascorbic acid, 25.32 mL of I2 were required to reach the starch end point. A. What is the molarity of the iodine solution? B. What is the titer of the iodine solu..
Result in the formation of an aliphatic carboxylic Acid. Occur in Claisen-Schmidt condensation mechanisms
Magnesium hydroxide is only very slightly soluble in water. The reaction by which it goes into solution is: Mg(OH)_2 (s) Mg^2+ (aq) +2 OH- (aq)
Calculate the equilibrium pH of a solution containing 5x10^-4 M Na2CO3 and 5X10^-4 M NaHCO3.
Why do you think that being exposed to air can have an effect on the amount of vitamin C present in the sample of juice?
Not more than 5 H-bond donors (OH or NH) Not more than 10 H-bond acceptors (O or N) MW less than 500 g/mol What is the rational for the Rule of Five?
Propose a method to accurately measure the melting point of vegetable oil both before and after hydrogenation. Keep in mind that it will be too thick and greasy to insert in a capillary tube
At 700.°C, the total pressure of the system is found to be 3.45 atm. If the equilibrium constant KP is 1.52, calculate the equilibrium partial pressures of CO2 and CO.
If 20.0mL of 0.00200 M Fe(NO3)3 is diluted to 50.0mL, what is the concentration of Fe+3 in the diluted solution?
the elemental mass percent composition of ascorbic acid (vitamin C) is 40.92% C, 4.58% H, and 54.50% O. Determine the empirical formula
Calculate the Triangle H degree f for calcium cyanamide.
Which are likely to be stable at ordinary temperature and pressure?
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