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What is the enthalpy of combustion (in kJ/mol) for acetone (CH3COCH3) under standard conditions (water is produced as a liquid)? Use the appendix in your textbook, do not enter units, and answer with 5 significant digits.
Calculate the osmolarity of this solution. my answer is 0.499 osm. Is that correct? 2*(.1249) + 1 (.2499)
Which of the following would be expected to have the highest pH?
How much energy would be absorbed as heat by 75 g of iron when heated from 295 K to 301 K? (Cp for iron=0.449 J/g*C)
how many atoms of copper are there in this wire?
At constant external pressure (1.2atm), the temperature of 3.25 mol of ideal gas increased from 250K to 305K. Calculate the internal energy change ΔE.
At a particular temperature and 2.00x10^-2 M, concentration versus time data were collected for the reaction, and a plot of the natural log versus time resulted in a straight line with slope value of -2.97x10^-2 min^-1. Determine the rate law, int..
what mass of limestone is required to remove all the sulfur dioxide formed by the combustion of 9.2 X 10^4 kg of coal that is 0.33 mass % sulfur?
if you lived in the mountains where the atmospheric pressure is 685 mm Hg, what would the partial pressure of oxygen and of nitrogen be ?
A student measures out 100.0 ml of 1.00 M HCl and places it in a styrofoam cup. The temperature of the HCl is 22.30C. She then addes 1.002 g of MgO to the cup.
Calculate the volume of 8.0g of oxygen gas if it has a temperature of 552 K, and a pressure of 5 atmosheres
If 10.00 mL of 0.250 M NaOH solution is added to 100.00 mL of the above original buffer solution (described in part 1 of this problem), what is the new pH of the solution?
Rather than weigh the sample on a balance a chemist wants to dispense the liquid using a pipette. What volume (in mL) should she measure out?
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