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calculate the molality (m) of the following solutions: a)65.0 g of glucose, C6H12)6, a nonelectrolyte, added to .112 kg of water. b).320 mol of sucrose, C12H22O11, a nonelectrolyte, dissolved in 1.50 kg of water?
Balancing equation to calculate correct number of moles If CaC2 + 2 H2O --> C2H2 + Ca(OH)2 then, there are 65 grams of calcium carbide
A solution is prepared by mixing 75.0 mL of 5.00 M HCl and 40.0 mL of 8.00 M HNO3. Water is then added until the final volume is 1.00 L. Calculate [H+], [OH -], and the pH for this solution.
Species A and B were separated using column chromatography. The elution time for species A (tA) was 200 s with a peak width (wA) of 35 s and the elution time for species B (tB) was 321 s with a peak width (wB) of 35 s.
Derive Eh-pH equations based on the progressive oxidation of Mn to form oxides starting with metallic Mn. b) Plot these equations in coordinates of Eh and pH
Calculate the pH of a 25 mL distilled water sample after the addition of 1mL, 2mL, 3mL, 4mL
If iron is oxidized to Fe2+ by a copper(II) sulfate solution, and 0.704 grams of iron and 12.6 mL of 0.581M copper(II) sulfate react to form as much product as possible,
1g soil has been spiked with 0.1ml of 100 ppm (v/v) trimethylbenzene and subsequently extracted with 250 mL pentane. The extract is then measured with GC-FID.
Calculate the amount of mass in nano gram that is changed into energy when one mole of liquid water forms by combustion of hydrogen
If wave (a) has a wavelength of 1.0 m and a frequency of 3.0*10^8 cycles, what are the wavelength of wave
milk is pasteurised when heated to 63 C for 30 minutes, but if it is heated to 74 C it takes only 15 seconds for the same result. Find the activation energy for this sterilisation process
Assume that 500g of dry ice is placed in a cavity with a volume of 0.800 L and the ignited gunpowder heats the CO2 to 700 K. What is the final pressure in the hole?
A backpacker wants to carry enough fuel to heat 2.2 kg of water from 30 C degree to 100.0 C degree. If the fuel he carries produces 36 kJ of heat per gram when it burns
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