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The unknown has peaks at 2818.38, 2716.12, 1682.14, 1622.34, 1491.16,1450.65, 1359.99, 1304.05, 1188.30,1014.69, 925.95,883.51, 758.19, 698.39.
A fossil was analyzed and determined to have a carbon-14 level that is 54.0 that of living organisms. How old is the fossil
Calculate the magnitude of the current in amperes if the number of moles of hydrogen gas produced is 5.99×10?4 .
Acetic anhydride is formed from acetic acid in a condensation reaction that involves the removal of a molecule of water from between two acetic acid molecules. Write the chemical equation for this p
The heat of combustion of naphthalene (C10H8) is - 5157 kJ/mol. Using these data and data in Appendix C, calculate the heat of hydrogenation of naphthalene.
Using condensed structural formulas, write a balanced chemical equation for each of the following reactions. hydrogenation of cyclohexene
Write a chemical equation for the formation of methionyl glycine from the constituent amino acids.
Imagine a single DNA strand containing a section with the following base sequence: 5'-GCATTGGC-3'. What is the base sequence of the complementary strand
Calculate the cell potential for the following reaction that takes place in an electrochemical cell at 25°C.
Balance the following redox reaction if it occurs in acidic solution. What are the coefficients in front of H2C2O4 and H2O in the balanced reaction
If the temperature changes to 81c with no change in volume or amount of gas, what is the new pressure,P2 , of the gas inside the container. Express the pressure numerically in torr.
What Celsius temperature,T2 , is required to change the volume of the gas sample in Part A ( = 37 , = 1560 T1=37C, v1=1560L) to a volume of 3120 L? Assume no change in pressure or the amount of gas
Consider 4.30 L of a gas at 365mmHG and 20 C. . If the container is compressed to 2.70L and the temperature is increased to 31 C, what is the new pressure,P2 , inside the container? Assume no change
How many moles of HNO3 are present if 0.141mol of Ba(OH)2 was needed to neutralize the acid solution
The pressure and temperature remain the same, but the volume has changed to 14.0 . How many moles of gas () remain in the cylinder? in moles
A cylinder, with a piston pressing down with a constant pressure, is filled with 2.00 of a gas (), and its volume is 42.0 (). If 0.500 of gas leak out, and the pressure and temperature remain the sa
What will be the final concentrations of NH3,N2, and H2 after equilibrium is established. I know the answers are suppose to be H2=.170M, NH3=.0424M, N2=.0568M, but I don't know how to get them.
What volume (in mL) of an 8% w/v acetic acid solution would be needed to form 2.2 L of carbon dioxide gas at 25.2 degrees Celsius and 0.9982 atm? Assume the acid is reacted with excess sodium bicarb
Give the voltaic cell shorthand description for this reaction as a voltaic cell.Write anode and cathode under the correct portions of the shorthand description. Show the two half reactions and ident
Balance two of the following redox equations. Identify the oxidation half reaction and the reduction half reaction. Fe^2+ + MnO4_. Fe3+ + Mn2+
Suppose that ammonia decomposes at 600 Kelvin to establish equilibrium NH3<--> 1/2N2(g)+3/2H2 for which K=0.395. You have a box volume of 1.00 liter into which you inject 2.65 grams of NH3 at
Pure water, .120 m C6H12O6, .050 m LiBr and .050m Zn(NO3)2....which has the highest vapor pressure, highest boiling point and highest freezing point
Write equations for the half-reactions that occur in the electrolysis of molten potassium bromide.
When electrical current of unknown magnitude is run through the device for 3.50 min, 16.1 mL of water-saturated H_2(g) is collected. The temperature and pressure of the system are 25 degreesCelsius
How many minutes will it take to electroplate 26.1 g of gold by running 5.00 A of current through a solution of Au+ (aq)