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An endothermic third-order reaction 3A ? 2B + C is carried out in a batch reactor. The reaction mixture is heated to 400°C. The reaction then proceeds adiabatically. During the heating period, 10 mol-% of A is converted. From this instant on, what is the time required to reach a conversion of 70 percent?
How do you calaculate the wavelength of the 5th line in the hydrogen atom Paschen series. Calculate the energy released in the transition from the first part.
A student weighs out exactly 0.250 g CaCO3 (formula weight 100.09 g/mole) and then dissolves this in exactly 250 mL of water. Calculate the Ca concentration of this solution in mg/mL and in M
Arrange the following solutions in order of decreasing freezing point- 0.20 m MgCl2, 0.15 m C6H6, 0.10 m CrBr3, 0.15 m CH3CH2COOH, 0.35 m NaCl.
Imagine that 1.00 mol H2O(l) is placed in a piston with a constant external pressure Pext = 1 bar. The piston is then placed in a large thermal bath at a temperature of 270 K.
Tooth enamel is mainly hydroxyapatite. If 1.150g of tooth enamel reacts with hydrochloric acid to give 1.231g of calcium chloride, what is the percentage of hydroxyapatite in the tooth enamel sample
Give detailed mechanisms for the following reaction, including curly arrows to show electron shifts.
Seawater has a concentration of 400 ppm Ca. You wil first prepare a 10-fold diluted Buzzards Bay seawater solution (40.0 ppm Ca). Pipet 10.00 mL of Buzzards bay seawater into a 100.0 mL volumetric flask and fill to mark with deionized water
A sample of 10.7 g of CO reacts completely with O2 to form CO2. How many grams of CO2 will be formed
Name two amino acids that are mostly positively charged at neutral pH. A Lysine and arginine B Histidine and arginine C Cysteine
The DNA Polymerase is an enzyme that accurately replicates your DNA. It has only one active site! Describe how four bases with different geometries can fit into a single active site and how does the enzyme differentiate between the four bases
Find the volume of a molar solution and What volume of a 2.00 molar solution of sulfuric acid, H 2 SO 4 , is required to react with 250.0g of magnesium carbonate, MgCO 3 , according to the following equation?
At 23.0 degrees celcius the total pressure in the container is 5.30 atm Calculate the partial pressure of each gas in the container Methane, ethane then propane answer in this order
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