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Hydrogen gas has a higher fuel value than natural gas on a mass basis but not on a volume basis. Thus, hydrogen is not competitive with natural gas as a fuel transported long distances through pipelines. Calculate the heats of combustion of H2 and CH4 (the principal component of natural gas)
(a) per mole of each,
(b) per gram of each,
(c) per cubic meter of each at STP. Assume H2O(l) as a product.
If a student utilized a sample of metal that was wet an important percentage of the apparent mass of the metal would be water. Would the ensuing measured value of the heat capacity be too high or too low. Explain.
Copper is electroplated from CuSO4 solution. A constant current of 4.00 amp is applied by an external power supply. How long will it take to deposit 1.00 x 10^2 g of Cu. The atomic mass of copper is 63.546.
Professor Tipton, being an avid hunter, was stalking the woods for morels. He saw a giant morel next to a fallen tree. When he reached down to get it a small timber rattler bit his hand
Determine the mass of aluminum acetate that can be made if you do the reaction with 125 grams of acetic acid and 275 grams of aluminum hydroxide.
How many moles of HF (ka= 6.8 X 10^-4) must be present in 0.200L to form a solution with a pH of 3.25
Problem- An aqueous solution containing 6.0 g of a compound X in 120 mL is extracted three times with 20 mL portions of diethyl ether each time. Calculate the total amount of compound X that will be extracted by diethyl ether. Given Kdiethyl ether..
Given a vapor pressure of toluene of 21 mm Hg, at 760 mm Hg, what is the equilibrium concentration for toluene
Be sure to fully explain how your experiment and the resulting data would allow you to determine the wavelength of maximum absorbance for the FeSCN2+ complex.
Explain the following trends in lattice energy. (Select all that apply.) (a) NaCl > RbBr > CsBr CsBr is smaller than RbBr and NaCl. NaCl is smaller than RbBr and CsBr
A canister is filled with 320 g of ice and 100 gm of liquid water, both at 0 C . The canister is placed in an oven until all the H_2O has boiled off and the canister is empty.
Describe the nature and characteristics of PCB s. Why are they of importance to an EH&S or FS professional who encounters them when.
For half life problems how would you solve this. How old is a bottle of wine if the tritium (h-3) activity is 25% that of the new wine (h-3 half life =12.3 years)?
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