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The combustion of one mole of propane, C3H8, releases 531 kcal. How much heat is released by the combustion of 1.20 moles of propane?
What mass of solid citric acid (g) and how many milliliters of 0.500 M NaOH are needed to produce 100.0 mL of a buffer with a pH of 6.50 and a weak base concentration of 0.0250 M
Determine the energy of an electron in the given quantum level of each of the following ions. (Hint: Each of the ions has a different number of protons
Quantum number representations - What are the possible values of the four quantum numbers for one electron in a 5d orbital?
If all four gases had initial concentrations of 0.650 M, calculate the equilibrium concentrations of the gases.
The specific heat capacities of Fe(s) and water are 0.45 J/g? and 4.184 J/g?, respectively. What is the final temperature of the system?
Gasohol contains ethanol (C2H5OH) which when burned reacts with oxygen to produce CO2 (g) and H2O(g). How much heat is produced when 12.5 grams of ethanol burns.
A solution containing 100g of unknown liquid and 900g water has a freezing point of -3.33C. Given Kf=1.86C/m for water, determine the molecular weight of the unknown liquid and express your answer in g/mol.
if 100L of hydrogen gas at 20 atm and 259 k reacts with excess nitrogen,how many liters of NH3 at 500 k and 1 atm will form
What is the molarity of a solution if 4.50 g NaF is dissolved in enough water to make 250.0 mL of solution?
Write the net ionic equations for the reactions.
Phosphorus-32 has a half-life of 14.0 days. Starting with 8.00 g of Phosphorus-32 , how many grams of P-32 will remain after 98.0 days?
What reagent could be used to reduce both the nitro and ketone functional groups in a single reaction?
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