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A 0.7120g specimen of iron ore was brought into solution and passed through a Jones reductor. titration of the Fe(II) produced required 39.21 mL of 0.02086 M KMnO4. express the results of this analysis in terms of (a) percent Fe and (b) percent FeeO3
Calculate the density of hydrogen sulfide gas, H2S, at 58°C and 896 mm Hg. Obtain the density in grams per liter.
0.65 of sodium hydroxide (NaOH) pellets are dissolved in water to make 2.5L of solution. What is the pH of this solution
The equilibrium constant Kp for the reaction ; CCl4(g) C(s) + 2Cl2(g) at 700 celcius is 0.76 atm. Determine the initial pressure of carbon tetrachloride
The balences in the lab can weigh a maximum of 220.000 g at once. if a beaker has a mass of 86.4329 g, what is the maximum volum of water
An antacid tablet contains 0.1 g of magnesium hydrogencarbonate, Mg(HCO3)2. What mass of stomach acid, HCl, will it neutralise? The reaction between Mg(HCO3)2 and HCl is: Mg(HCO3)2 + 2HCl → MgCl2 + 2CO2 + H2O
Describe how to prepare 50.0mL of 5.30 x10-2 M solution from pure drug and water.
Liquid nitrogen has a density of 0.808 g/mL at 77 K. A sample of 1.5 L of liquid nitrogen is allowed to evaporate at 22.2 °C and 0.998 atm of pressure. What volume will the nitrogen gas occupy
how many metric tons of oxygetn are combined in a sample of pitchblende that contains 2.3 t of
About how many gallons of CO2 are produced by an incandescent 60-W lightbulb burning for an hour
a meteorological ballon contains 250.0l he at 22 degrees celsius and 740.0mm hg. if the volume of the ballon can vary
How many moles are present of an ideal gas at the following conditions: 1.0 atm, 25.00C
Two of the isomers have C-C-C bond angles that deviate significantly from those predicted by VSEPR theory. On this basis, which isomer would you predict is the least stable one? the second least stable?
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