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A solution contains Chromium,Cr3+ ion and Magnesium Mg2+ ion. The addition of one litre of 1.55M Sodium fluoride solution is needed to cause the complete precipitation of these ions as Chromium fluorideCrF3(s) and MgF2 (s). Determine the mass of Cr3+ in the original solution if The total mass of the precipitate = 49.6 .
the dipole moment mu of hydrogen bromide hbr a polar covalent molecule 0.790 d debye and its percent ionic character
it is given that the half-life of 137ce 30. years. determine how many grams will remain in 150 years if we have 150.000
considering the given equation as 2fe2o3s 3cs rarr 4fes 3co2g and compute w when 181 grams of iron iii oxide mm
there is a company called walmart and it deals with machining work that is conventional. a variety of machines are used
the heat capacity of pbo is given bynbspcjk-mol 44.35 0.00167 t pm compute the change in enthalpy of solid lead oxide
if 1 mole of a van der waals gas for which it might be shown that nbspspread out is o thermally from a volume of two
what would the change in temperature be in each change if 1 mole of an ideal gas is subjected to numerous changes in
question describe the relationship between thyroid hormone receptor and sleep-wake cyclenbspplease list all the sources
question write a one-page essay on biotechnology using recent articles either in print or web-based. please list the
microbiology and environmenttopic bioremediationintroduction with historical timelineprinciplebioremediation factors
explain why addin eletcrons to a bonding orbital leads to bonding of an atom, in terms of electron distribution
A room with dimensions 7.00m by 8.00m by 2.50m is to be filled with pure oxygen at 22.0C and 1.00atm . The molar mass of oxygen
Construct a Molecular Orbital Diagram showing the various energy levels for an Octahedral Transition Metal Complex (?-bonding only case!). Label (i) all initial metal orbitals
Draw the amine from the following: A Hofmann degradation of a primary amine forms an alkene that gives butanal
How many grams of NaCl would be needed to make 1.5 liters of a solution containing 200mEq of Cl-/liter? 2. How many grams of CaCl2 would be needed to make 0.5 liters of a solution containing 150mEg of Cl-/liter
During a strenous workout, an athlete generates 1890.0 kj of heat energy. What mass of water would have to evaporate from the athlete's skin to dissipate this much heat?
Arrange the following aqueous solutions in order of increasing freezing points
Calculate the standard reaction enthalpy for the oxidation of nitric acid to nitrogen dioxide, 2NO(g) + O2(g) ----> 2NO2(g) from the standard reaction enthalpies of
Estimate how long it will take for the bleach molecules to diffuse through the extent of the room, assuming that the bleach bottle is in the center of the room, and the room is perfectly square, and is a 10 foot x 10 foot room.
Calculate the volume of the gas, in liters, if 1.65 mol has a pressure of 0.995 atm at a temperature of -4 degrees Celsius. Calculate the absolute temperature of the gas at which 3.13 x 10-3 mol occupies 335 mL at 760 torr.
Draw the product formed by the reaction of potassium t-butoxide with (1S,2S)-1-bromo-2-methyl-1-phenylbutane
a weather ballon filled with helium has a volume of 1.0*10^-4L at 1.00 atm and 30.0C. it ascends to an altitude at which the pressure is only 0.60 atm and the temperature is -20.0C. what is the volume of the ballon at the higher altituda.
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