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How many grams of methane gas (CH4) need to be combusted to produce 18.2 L water vapor at 1.2 atm and 275 K? Show all of the work used to solve this problem.
CH4 (g) + 2 O2 (g) CO2 (g) + 2 H2O (g)
If a molecule having an ionization energy of 10.51 eV produces a photoelectron having a kinetic energy of 7.01676E-19 J, what is the wavelength of the incident radiation?
explain in detail why there are exactly 14 elements shown in the Lanthanide series of the periodic table.
Gold has a face-centered cubic arrangement with a unit cell edge length of 4.08 . How many moles of gold fit in a sheet with a length of 72.3 , a width of 26.9 , and a thickness of 12.2
Cyclohexene with potassium permanganate solution. Cyclohexene with bromine-water solution
Describe how you would prepare 100mL of a single solution containing all of the following reagents at the designated concentrations- 0.1M NaCl, 0.05M glucose, 5% wt/vol alanine, and 1mg/mL urea.
Calculate the pH at the points in the titration of 40.00 mL of 0.425 M NH3 for the reaction below. NH3(aq) + HNO3 ? NH4+(aq) + NO3?(aq) For NH3, Kb = 1.8x10-5. Enter your answer with 2 decimal places.
Consider this reaction involving an unknown element X. When 1.800 g of XBr reacts, 0.6758 g of Br2 is produced.
A bu?er was prepared by mixing 1.0 mole of ammonia and 1.0 mole of ammonium chloride to form an aqueous solution with a total volume of 1.00 liter.
The turnover number for an enzyme is known to be 5,000 min-1. From the following set of data, calculate the Km and the total amount of enzyme present in these experiments.
If the 4.00g sample corresponds to 0.0666 moles of a compound, what is the molecular formula of the unknown molecule (CxHyOz)
1 some bacteria are able to harvest light of 1000 nm wavelength. a what is the energy in kilojoules of a mole of 1000
The standard enthalpy of atomization of an element is the energy required to convert one mole of an element in its most stable form at 25 Celsius to one mole of monoatomic gas.
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