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Urea ((NH2)2CO) can be formed from ammonia and carbon dioxide as shown in the following reaction. ?H° value for this synthesis is -134.0 kJ, and ?S° is -424.0 J/K. Calculate the ?G°f for urea. 2NH3(g) + CO2(g) ? (NH2)2CO(s) + H2O(l)
A gas occupying a volume of 1.50 L exerts a pressure of 700 mmHg at 200 degrees C. Which mathematical expression gives the correct pressure at 6.00 L and 400 degrees C?
If 27.0 mL of 0.0200 M KMnO4 were required to titrate a 0.425 g sample of K3[Fe(C2O4)3] * 3H2O, what is the % purity of the complex
An equilibrium mixture contains 0.750 mol of each of the products (carbon dioxide and hydrogen gas) and 0.200 mol of each of the reactants (carbon monoxide and water vapor) in a 1.00-L container.
What is the volume of 0.2 kmol of ideal carbon monoxide in en equilibrium state where the gas density
consider a situation in which 235g of p4 are exposed to 272g of o2. what is the maximum amount of p2o5 that can
what volume(in mL) of 0.0887 M MgF2 solution is needed to make 275.0mL of 0.0224 M MgF2 solution.
The rotation constant for H2 is 60.80 cm-1 the harmonic frequency is 4395.3 cm-1 and the anharmonicity constant is 117.90 cm-1. calculate the frequency at which the Q branch first overtone will be found.
gold-198 is a beta emitter with a half-life of 2.7 days. what percentage of a gold-198 sample remains after 13.5 days?
After completing the orbital diagram of each element, determine the number of unpaired electrons for the following elements: Titanium Phosphorus Copper Selenium Fe+2 Na+ Mn+4 Cl+3
The formulas for ethane, ethene and ethyne are C2H6, C2H4, and C2H2 respectively. Rank these compounds by the length of the carbon-carbon bond.
When carbon is burned in air, it reacts with oxygen to form carbon dioxide. When 27.6 g of carbon were burned in the presence of 87.2 g of oxygen, 13.6 g of oxygen remained unreacted. What mass of carbon dioxide was produced?
the corresponding sound. If you are 480.0 m from the explosion and the speed of sound is 340 m/s, calculate the distance traveled by the light during the brief delay required for the sound to reach
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