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Seawater contains 0.13% magnesium by mass, and has a density of 1.025g/ml. What fraction of the magnesium can be removed by adding a stoichiometric quantity of CaO (that is, one mole of CaO for each mole of Mg2+)
Which of the following is true about any R enantiomer. A. it has a + rotation b. it has a - rotation c. it is a mirror image of the S enantiomer is it A only B only A and C or B and C
in july in los angeles the incident sunlight at ground level has a power density of 1.2 kw m-2 at noon. a swimming pool
The following compound can be used to make an addition polymer. Show the general structure of the polymer that it will form. Ch2=CH(COOCH3)(CH3)
a) what is the ratio of conjugate base to conjugate acid after 100 ml of 1M HA is adjusted to a pH of 8? b) under the conditions in part a, how many moles of HA are present? How many moles of A- are present? c) What is the pH of the solution descr..
Compounds like CCl2F2 are known as CFCs and were once widely used as refrigerants. Breaking down of these molecules in the atmosphere releases Cl atoms
Liquid sodium can be used as a heat transfer fluid. It's vapor pressure is 40.0 torr at 633 Celsius and 400.0 Torr at 823 Celsius. Calculate its heat of vaporization.
Find the theoretical yield for the following synthesis of ferrocene. 2KOH + 2C5H6 + FeCl2(H2O)4 --> Fe(C5H5)2 + 2KCl + 6H2O 25gKOH are in the reaction 5.5 mL C5H6 are used in the reaction
For the series of spectral lines of atomic hydrogen with n1 = 3, which of the following wavelengths does not correspond to a wavelength predicted by the Rydberg equation? Rydberg equation: 1/? = (1.097 x 107 m-1) x (1/n12 - 1/n22) ----- A. 1875 nm..
A 2.0 L glass soda bottle filled with air is tightly capped 18degC and 686mmHg. If the bottle is placed water at 95degC, what is the pressure in the bottle
Determine the pressure of the gases trapped in the closed end of a manometer apparatus if the water column which separates the closed end from the open end is 10.55 cm higher on the closed end than the open end, and if the barometric pressure at t..
a solution is prepared by adding 30.0ml of 0.060m hbr to 130.0ml of 0.40m hi. calculate the concentrations of all
Why does ionization of a tertiary substrate proceed at a rate faster than that of a secondary substrate
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