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A white precipitate forms on addition of 6M HCl to a solution containing some metal ion. the precipitate is dissolved on heating the solution and is generated back on cooling . Identify the metal ion which may contain, also, write a balanced equation corresponding to the formation of precipitate?
normal glucose levels in the blood are from 70 to 10 mg glucose per 100 mL of blood. If the level falls too low, there can be brain damage.
2.9 mol Fe(OH)3 and 7.7 mol H2SO4 react according to the equation 2 Fe(OH)3 + 3H2SO4 ->Fe2(SO4)3 + 6H2O. If the limiting reactant is Fe(OH)3, calculate the amount of Fe2(SO4)3 formed.
Discuss the common-ion effect by comparing the solubility of CaCO3 in 3.0 x 102 ml of water and in the presence of 0.015 mole of Ca(NO3)2.
A weak base indicator (In) may be considered to be in equilibrium with HIN+ and OH- ions. The color of the non-ionized molecule is green and that of HIn+ is yellow. What would be the color of this indicator in a very acidic solution? explain. HINT..
A 0.050 M CaCl2 solution is adjusted to a pH = 8. Will Ca(OH)2(s) precipitate.
M HNO3 is mixed with 439 mL NaOH with pH=13.97. What is the pH of the resulting solution?
For a first-order reaction, the half-life is constant. It depends only on the rate constant and not on the reactant concentration. It is expressed as: t1/2 0.693/k. For a second order reation, the half-life depends on the rate constant and the con..
At high pressures, Ne behaves as an imperfect gas. In the range 300 K to 500 K the equation of state for one mole of Ne (g) can be written as : PV = RT + BP where B is a constant.
Then the gas is cooled at a constant volume of 25.0L back to its original temperature. Then it contracts back at a constant tempurature to its original volume. Find the total heat flow for the entire process.
a mass of 47.5 g of h2os at 273 k is dropped into 225 g of h2ol at 298 k in an insulated container at 1 bar of
Calculate the molecular mass of the nonionic solutes.
Does FADH2 have a thermodynamic tendency to reduce coenzyme Q at pH 7. Explain why.
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