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Given the following balanced chemical equation, how many mol of NaN3 can be formed if 2.50 mol of Na are allowed to react with 4.50 mol of N2? 2Na +3N2 --> 2NaN3
A. 2.50 mol NaN3
B. 3.00 mol NaN3
C. 4.50 mol NaN3
D. 7.00 mol NaN3
When a 1.30-g sample of ethanol (alcohol) is burned in a calorimeter, the heat released increases the temperature of 870g of water in the calorimeter from 18.5 C to 28.9 C .
A gaseous sample of this element is bombarded by photons of various energies (in these same units). Match each photon to the result
The decomposition of urea in 0.1 M HCl is first order in urea and first order overall. When [urea] = 0.200 M , the rate at 61.0 °C is 8.56 x 10-5 M/s. What is the concentration of urea in this solution after 4751 s if the starting concentration is 0..
A patient is given 5.5 x10^-2 mg of technetium-99 m, a radioactive isotope with a half-life of about 6.0 hours.How long untilth radioactive isotope decays to 6.0 x10-3 mg? (assume no excretin of the nucelotibe from the body.) Answer is in T =hours.
State whether each of the following experimental errors would raise or lower the mass of the recovered product:
Express the rate of the reaction with respect to each of the reactants and products. In the first 15.0 s of the reaction, 0.015 mol of O2 is produced in a reaction vessel with a volume of 0.500 L. What is the average rate of the reaction over this ..
The decomposition of hydrogen peroxide is first order in H2O2. 2H2O2 -----> 2H2O + O2 The rate constant for this reaction at 20 C is 1.8 * 10^-5 s^-1
calculate the number of kilograms of refrigerant that must be evaporated to freeze a tray of 17 one ounce ice cubes starting with water at 15C, Heat capacity of water is 4.184 j/gC deltaH of fussion of water = 333 j/g.
Light in a vacuum travels at a speed of 3.00x10^8 m s^-1. Pluto's average distance from the sun is 3.6 billon miles. How many minutes does it take sunlight to reach Pluto
Determine the complete formula for hydrated nickel(II) sulfate and its proper name. (show all steps)
A 5.0 g sample of a hydrate of BaCl2 was heated, and only 4.3 g of the anhydrous salt remained. What percentage of water was in the hydrate?
Kp for this reaction is 5.1 x 10-2 atm-1. Initially, 1.00 g each of SO2 and Cl2 are placed in a 1.00 L reaction vessel. After 15 minutes, the concentration of SO2Cl2 is 45.5 μg/mL.
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