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the fluorocarbon compound C2Cl3F3 has a normal boiling point of 47.6*C. the specific heats of C2Cl3F3 (liquid) and C2Cl3F3 (gas) are 0.91 J/gK and 0.67J/gK, respectively. the heat of vaporization for the compound is 27.49 kJ/mol. Calculate the heat required (kJ) to convert 25.0 g of C2Cl3F3 from a liquid at 5*C to a gas at 82*C
The balloon is designed to continue its ascent to an altitude of 30 km, where it bursts, releasing a package of meteorological instruments that parachute back to Earth.
Iron has a density of 7.874. g/cm3. What is the mass of a rectangular block of iron with dimensions of 3.000 cm by 4.000 cm by 5.000 cm?
Calculate how many grams of phosphorus are present in 2.68 moles of phosphorus pentachloride(PCl5) and also determine the numbers of moles of chlorine are present in 3.71 grams of phosphorus pentachloride?
Use any other reagents that you need. Hint: you may first want to conduct some chemistry on each alkene first, then use the resulting products to make 1-decanol.
Calculate the pH of a solution of 15 mL K2HPO4 at 0.1 molarity,
What is the molarity of the nitrate ions when 0.35 mol of barium nitrate, Ba(NO3)2, is dissolved in enough water to make 3.0 L of solution?
A 25.0 g sample of pure iron at 85.0°C is dropped into 75 g of water at 40.0°C. What is the final temperature of water-iron mixture?
If 22.8 mL of NO2 gas is completely converted to N2O4 gas under the same conditions, what volume will the N2O4 occupy?
Describe the pH of a buffer solution consisting of 100 mL containing 0.1M CH3COOH and 0.125M CH3COO- , both before and after addition of 10 mL of 0.25M HCl. Ka = 1.8 x 10-5.
What is the chemical balance equation and what causes the color and precipitation?
What is the final concentration of a solution made from 7.4 mL of 0.97 M CuSO4 and 14.4 mL of water?
A unknown liquid is insoluble in water and soluble in cyclohexane and alcohol with a boiling point of 110 C What is the substance?
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