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1. How many grams of F2 must react with NaCl in the following reaction if 800 kJ of energy are released? 2NaCl + F2 --> 2NaF + Cl2, ΔH = -320 kJ
A. 47.5
B. 95.0
C. 40.0
D. 125
E. 190
2. Consider the following reaction: 2C3H8 --> C6H6 + 5H2, ΔH = +698 kJ.
Several of these ingredients were mixed and 3141 kJ of energy was released.. Was the reaction proceeding in the forward or backward direction? How many moles of hydrogen gas were released or consumed?
A. forward, 22.5
B. backward, 4.5
C. forward, 1.11
D. backward, 1.11
E. backward, 22.5
Consider the titration of 100.0 mL of 0.100 M H2NNH2 (Kb = 3.0 10-6) by 0.200 M HNO3. Calculate the pH of the resulting solution after the following volumes of HNO3 have been added.
If the quantum number ms had possible values ±1, ±2, what would be the maximum number of electrons that be placed in a single orbital
CH3OH(g) is decomposed by this reaction at constant pressure. (c) For a given sample of CH3OH, the enthalpy change during the reaction is 82.1 kJ
What is the vapor pressure of propane at 25 C. its normal boiling point is -42C and deltaH of 19.04 kj/mol.
There are two separate containers of gases, where one contains oxygen and the other contains chlorine. a. If the temperature, pressure and volume are the same in both containers, which molecule would collide more often
Microwave ovens emit microwave energy with a wavelength of 12.4 cm. What is the energy of exactly one photon of this microwave radiation
consider a gas-phase reaction 2a-> r 2s with unknown kinetics. if a space velocity of 1/min is needed for 90% conversion of a in a plug reactor, find the corresponding space-time and mean residence time or holding time of fluid in the plug flow re..
How many grams of Mg2SO4 is required to make up 100mL of 20g/L Mg2SO4 solution in water?
a 54.7-g sample of aluminum at 95.0 oc is dropped into 35.0 g of water at 40.0 oc. what is the final temperature of the
If a total of 13.5 mol of NaHCO and 4.5 mol of C H O react, how many moles of CO and Na C H O will be produced? 3NaHCO (aq) + C H O (aq) 3CO (g) + 3H O(s) +Na C H O (aq).
gas cylinder a has a volume of 48.2l and contains n2g at 8.35 atm at 25 degrees c. gas cylinder b of unknown volume
How many seconds after the start of the reaction does it take for the reactant concentration to decrease to 0.0185 M?
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