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How many moecules of N2 are needed to react with 30 molecules of H2?
calculate the PH of a solution made by adding 5.00gram of sodium hydride,NaH,to enough water to make 0.900 litre of solution?
The decomposition of nitrogen dioxide is a second-order reaction. At 550 K, a 0.250 M sample decomposes at the rate of 1.17 mol/Lxmin a). Write the rate expression?
A solution was prepared by mixing 50.00 mL of 0.190 M HNO3 and 124.00 mL of 0.150 M HNO3. Calculate the molarity of the final solution of nitric acid.
While shutdown, the core accidentally went critical and the reactor pressure vessel rose in temperature and was hot for two hours, but all instrumentation has failed and no one is sure what the temperature was.
In the nitration of methyl benzoate, why do you wash the crystals with water followed by an ice-cold methanol washing? What is the purpose of pouring the reaction mixture over ice?
What is ozone and how it works as a protective molecule for our environment? What are the effects of CFCs on the ozone layer.
A piston has an external pressure of 11.0 bar . How much work has been done if the cylinder goes from a volume of 0.150 liters to 0.570 liters.
A sample containing 0.0250 M concentration of a dye in a cell of 1 cm^2 cross section has a measured absorbance of 1.012 at 650 nm.
Calculate the average kinetic energies of the CH4 and N2 molecules at 286 K and 556 K?
Octane has a density of 0.692 g/mL at 20°C. How many grams of O2 are required to burn 1.00 gal of C8H18?
At a certain temperature, the root mean square speed of CH4 molecules is 1610 km/h. what is the root mean square speed of CO2 molecules at the same temperature ?
A compound made up of only phosphorus and chlorine contains 77.45% chlorine by weight. What is the electron domain geometry of the central atom of this substance?
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