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Ammonium nitrate is a common ingredient in fertilizers that can also be used to make explosives because it decomposes as follows:
NH4NO3(s) ? 2 N2(g) + O2(g) + 4 H2O(g) ?H = -236 kJ
The following questions deal with the decomposition of 12.1 g of NH4NO3:
(a) How much heat is liberated under standard conditions?
(b) How much work would be done by the gases at 310.°C?
(c) What volume of gas would be produced at 1.05 atm pressure and 310.°C?
calculate the IHD and select all the types of unsaturation that might be present in the molecule based on the IHD.
The freezing point of an aqueous solution containing 15 g of a nonelectrolyte in 150 mL water is -5.4°C. What is the molecular weight of the compound? Kf = 1.86°C/m for water.
if 100 mL of 0.800 M Na2SO4 is added to 200 mL of 1.20 M NaCl, what is the concentration of Na ions in the final solution?
Does caffeine or chlorophyll have a higher Rf value? Briefly explain why by discussing the intermolecular forces present in the molecules
A titration required 16.86 mL of 0.1672 M of NaOH - how many moles are in the volume
When setting temperature scan program of Diffrential Scanning Chromatography,
sulfur dioxide was allowed to effuse through a small opening under constant pressure conditions. It required 179 s for 1.00 L of this gas to effuse. Calculate the effusion time of arsine (AsH3) under identical experimental conditions
Three sparingly soluble salts, MA, MA2, and MA3, all have Ksp = 1.5 x 10-7. Determine which of these three has the highest molar solubility in water? a) MA, b) MA2, c) MA3 ,d) They are all equally insoluble.
A solution is prepared by mixing 75.0 mL of 0.030 M BaCl2 and 250. mL of 0.040 M K2SO4. What are the concentrations of barium and sulfate ions in this solution? Assume only SO42- ions (no HSO4-) are present.
A buffer is prepared by mixing 675 mL of 0.50 M formic acid, HCHO2, and 325 mL of 0.50 M sodium formate, NaCHO2. Calculate the pH.
For each solution, calculate the number of moles of acid added. 3. For each solution, calculate the number of moles of OH- ion added.
Because Ions are more strongly attracted in an ionic compound than molecules are attracted in molecular compounds
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