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The specific heat of ethylene glycol is 2.42 J/g-k. How many J of heat are needed to raise the temperature of 62.0 g of ethylene glycol from 13.1 Celsius to 40.5 Celsius
the major differences in the dehydration of an alcohol by an E1 and E2 reaction mechanism.
Molten carbonate fuel cells fueled with H2 convert as much as 60% of the free energy relased by the formation of water from H2 and O2 into eletrical energy.
A battery charger use to recharge NiMH batteries can deliever as much as 0.30 A of current to each battery.
Calculate the resulting pH if 150 mL of 1.50 M HClO4 is mixed with 500 mL of 0.125 M Ba(OH)2.
The mixture has a density of .8252 g/l at temperature of 298 and pressure of 1 atm. What percentage of gas in container is He?
A buffer is prepared by mixing 675 mL of 0.50 M formic acid, HCHO2, and 325 mL of 0.50 M sodium formate, NaCHO2. Calculate the pH.
Decide whether or not each of the following metals dissolves in 1M HCl. For these metals that do dissolve, write a balanced redox reaction showing what happens when the metal dissolves.
Calculate the concentration of the Ca2+ in ppm (or mg/L) using the correct number of significant figures assuming the 1.0 HCl has a density of 1.000 g/mL. Show these calculations clearly in your notebook and on your report form. Recall that calciu..
What is the value of deltaH0 (in kJ) for the reaction described below. Assume the reaction is performed at 250C. C2H2 (g) + 2H2 (g) -----> C2H6 (g) a. - 248 b. - 311 c. - 173 d. 236
In which of these molecules or ions does the presence of nonbonding electron pairs produce an effect on molecular shape, assuming they are all in the gaseous state. Check all that apply. SiH4, PF3, HBr, HCN, SO4
what ph must be maintained by a buffers solution so that no more than 0.010 of the mg2 present in 0.360 m mgcl2 aq
the molar heats of combustion of three hydrocarbon gases arech4 methane- 890.0 kjmolc2h6 ethane- 1560.0 kjmolc3h8
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