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When each of the following pairs of aqueous solutions is mixed, does a precipitation reaction occur? If so, write the formula and name of the precipitate. (Type "NONE" in the blanks if there is no precipitation reaction.)
(a) sodium nitrate + copper(II) sulfate
(b) potassium chloride + iron(II) nitrate
The thermal decomposition of phosphate into phosphorous and molecular hydrogen is a first order reaction : 4PH3(g) -----> P(g) + 6H2(g), The half life of the reaction is 35.0 s at 680*c
Consider the following reaction, equlibrium concentrations, and equilibrium constant at a particular temperature. Determine the equilibrium concentration of SO3(g)
What is the recommended daily allowance (RDA) of calcium, in mg, assuming a 2000 calorie diet for a 25 year old adult? A student carries out part 1 of this experiment and finds the equation for his/her calibration curve to be
if the density of mercury is 13.6g/cm3, what will be the volume of 300g of mercury ?
A solid sample containing some Fe 2+ ion weighs 1.062g. It requires 24.12 mL 0.01562 M KMno4 to titrate the Fe2+ in the dissolved sample to a pink end point.
Draw and name all dienes of molecular formula C5H8. When E and Z isomers are possible, draw and name each stereoisomer
rom your initial observations, you suspect that the two beakers contain the same compound. Describe, in general terms, some experiments in a laboratory that you could do to help prove or disprove that the beakers contain the same compound.
Find the mass of urea (CH4N2O) needed to prepare 50.8 g of a solution in water in which the mole fraction of urea is 7.55×10?2.
write equations for the chemical reactions that occurred between the aqueous solutions of the oxides of sulfur and calcium and between the aqueous solutions
(One amp-hour is the charge that passes through a circuit when 1 Amp flows for 1 Hour). What mass of Zn is consumed when 35 amp-hours are drawn from the cell?
constitutionally isomeric ketones that have the molecular formula C4H8O2
What is the percent ionization of a 0.186 M solution of this acid? A certain weak base has a Kb of 7.50 × 10-7. What concentration of this base will produce a pH of 10.06?
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