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The heat energy required to melt 1.00 g of ice at 0 degrees C is 333J. If one ice cube has a mass of 62.0 g, and a tray contains 16 ice cubes, what quantity of energy is required to melt a tray of ice cubes to form liquid water at 0 degrees C?
One mole of a monatomic ideal has at a temp of 500K and 6atm pressure is subjected to the following changes: (all are reversible changes)
Three bulbs are connected by tubing, and the tubing is evacuated. The volume of the tubing is 35.0 mL. The first bulb has a volume of 35.0 mL and contains 8.84 atm of argon, the second bulb has a volume of 250 mL and contains 2.18 atm of neon
The decomposition of SO_2_Cl_2_ is first order in SO_2_Cl_2_ , and the reaction has a half-life of 245 min at 600 K. If you begin with 3.6e-3 mol of SO_2_Cl_2_ in a 1.0-L flask, how long will it take for the sample to decrease to 3.2e-4
The basic Salt sodium acetate, CH3COONa, is completely soluble in water. What is the pOH of a 0.25 M solution of sodium acetate?
approximately what percentage of the acetic acid molecules are protonated and neutral in charge at pH 5.7?
The sulfur dioxide stack gas concentration from fossil fuel combustion is 2ppm(v). Determine the stack-gas concentration in units of micro grams/m^3 assume 0 degrees Celsius and1atm.
unknown molecular (nonelectrolyte) compound in 102.0 g of water was found to have a freezing point of -1.8 degrees C. Calculate the molar mass of the unknown compound.
Calculate the pH of 1.00 L of a buffer that is 0.130 M HNO2 and 0.190 M NaNO2. What is the pH of the same buffer after the addition of 1.00 mL of 12.0 M HCl. (pKa of HNO2 = 3.40)
The osmotic pressure of a solution containing 26.5 mg of an artificial sweetener per liter is 1.70 torr at 30C. Calculate the molar mass of the compound.
A sample of gas in a balloon has an initial temperature of 22 and a volume of 1610 . If the temperature changes to 58, and there is no change of pressure or amount of gas, what is the new volume, , of the gas?
The element cesium (Cs) freezes at 28.4 degree celsius, and its molar enthalpy of fusion is delta H fusion =2.09kJ/mol. a.) when molten cesium solidifies to Cs (s) at its normal melting point, is delta S positive or negative? b.)calculate the valu..
The figure shown below shows a typical titration curve for 0.1 M NaOH with 40 mL of 0.05M oxalic acid (H2C2O4). The first equivalent point is ~ at 9 .0 mL and the second equivalent point is at ~18 mL.
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