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if 11.2 L of N2 are reacted to form NH3 at STP, how many liters of hydrogen will be required to consume all of the nitrogen
using a sample of river water sample analyzed for total inorganic carbon ,The river pH= 7.1 and an inorganic C concentration of 6.97 mg C/L.c
A bag of potato chips contains 580 mL of air at 25°C and a pressure of 755 mm Hg. Assuming the bag does not break, what will be its volume at the top of a mountain
63mL of a 1.70 M solution is diluted to a volume of 218 mL. A 109mL portion of the solution is diluted using 117mL of water. What is the final concentration?
The combustion of an organic compound releases 35.6 kJ of energy and causes the temperature of a constant volume calorimeter to increase by 4.76 °C .
One of the lines of the hydrogen line spectrum has a wavelength of 434.1 nm. It is known that all of the visible lines of the hydrogen spectra result from an electron
Calculate the molarity of each of the following solutions: (a) 29.0 g of ethanol (C2H5OH) in 545 mL of solution, (b) 15.4 g of sucrose (C12H22O11) in 74.0 mL of solution.
A zero-order reaction has a constant rate of 3.20×10-4 . If after 60.0 seconds the concentration has dropped to 6.50×10-2 , what was the initial concentration?
The half-life of 137Ce is 30 years. How many grams of 137Ce must be produced now to have a sample containing 32 g of 137Ce 190 years from now?Answer in units of g
How much heat is required to take a 15.0 g sample of ice with an initial temperature of 0.00oC and raise it to a final temperature of 75.0 oC.
A 50.00-mL sample of 0.100 M KOH is titrated with 0.152 M HNO3. Calculate the pH of the solution after 52.00 mL of HNO3 is added.
What causes cycloalkanes to have two less hydrogen atoms than similar alkanes that are open chain ones?
When solid iodine is introduced into an evacuated vessel at 25 degrees Celcius, some of the iodine sublimes. Predict how the enthalpy, entropy, and free energy change in the system
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