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What mass of isopropyl alcohol (C3H8O) in grams can be melted when a sample absorbs 1575 kJ of heat at its melting point? (Isopropyl alcohol: ?Hfus = 5.37 kJ/mol)
a. 1.76 × 104 g
b. 5.08 × 104 g
c. 2.93 × 102 g
d. 4.88 × 100 g
The pKa of acetic acid, HC2H3O2, is 4.76. A buffer solution was made using an unspecified amount of acetic acid and 0.30 mol of NaC2H3O2 in enough water to make 1.50 L of solution. Its pH was measured as 4.50 on a meter.
Calculate the integral of dqrev / T for each of the 4 steps in the Carnot cycle of, and sum them to prove that their sum equals zero
How many moles of ions are released when 0.27 mol of cobalt(II) chloride, CoCl2, is dissolved in water?
What mass of zinc oxide can be produced from the reaction of 415 g zinc sulfide with 265 g of oxygen gas? The other product is sulfur dioxide.
A solution of ethanol (C2H5OH) in water is prepared by dissolving 65.8 mL of ethanol (density = 0.79 g/cm3) in enough water to make 250.0 mL of solution.
the starting concentration of reactants (Q) and products (R) are both 15 uM, then the equilibrium concentration of Q and R is what in uM?
In a crazy situation the Oylan Vinegar Company has 10,000 gallons of vinegar with a concentration of .114 M. It also hass a .68% acetic acid by mass
The Kp for the reaction is 4.3X10^-4 at 648K. Determine the equilibrium partial pressure of NH3 in a reaction vessel that initially contained 0.900atm N2 and 0.500 atm H2 at 648K
The free energy change of the conversion of tasmainium to bulgarium was - 60 kcal and the enthalpy of the reaction was determined to be - 9.2kcal.
How many moles of HCl are required to react with 0.610 g of Al(OH)3 in the above unbalanced reaction? Use at least as many significant figures in your molar masses as in the data given.
Indicate the kind of hybridization (sp, sp2, sp3) you expect for each carbon atom in the following molecule. Why does each carbon atom have that hybridization?
At 20 Celsius, a saturated solution of NaCl in water has a concentration of 380 g of sodium chloride per liter of solution. How many g of NaCl are required to make 4 L of the saturated solution? Which is the solute and which is the solvent in this..
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