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Question- CCl2F2 is considered to be environmentally safe and is used as a refrigerant. The heat of vaporization of CCl2F2 is 289 J/g.
1) What mass of this substance must evaporate in order to freeze 2 moles of water initially at 20 °C? The heat of fusion of water is 334 J/g and the specific heat of water is 4.18 J/g-K.
Please explain solution of the above question
Why must all F- solutions be measured and kept in plastic ware rather than glassware. Why do you measure the most dilute solutions first when using ISE. Why do we not use TISAB when determining the selectivity coefficient.
a 36 gram sample of copper at 99.8 c is dropped into a beaker containing 207 grams of water at 18.5 c. what is the
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When 31.7mL of 0.235M Potassium hydroxide is required to completely neutralize 26.0mL of a HC 2 H 3 O 2 solution, calculate the molarity of the acetic acid solution.
Define whether each of the following aqueous solutions would be acidic, basic, or neutral. Include the suitable net-ionic equations to show why given solutions are acidic or basic.
How many joules are released when 6.94 moles of water cools from 100.0 degrees Celsius to 0.0 degrees Celsius?
calculate the solubility of caoh2 in a 0.469m cacl2 solution at 31degc given that the ksp of caoh2 is 4.96 x 10-6 at
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Carbon monoxide gas burns in oxygen to form carbon dioxide gas. Write a balanced equation for the reaction and determine the volume of oxygen needed to react completely with 910 mL of CO at 40.0°C and 1.00 atm
During the cooling of the fired crucible, water condensed on the crucible wall before its mass measurement. Will the percent water in the hydrated salt be reported as being too high, too low or unaffected? Explain.
A 355 ml container holds .146g of Ne and an unknown amount of Ar at 35 degrees C and a total pressure of 26 mmHg. Calculate the moles of Ar present
Compute the molar mass of beta carotene if 10.0ml of a solution containing 7.68mg of beta carotene has an osmotic pressure of 26.57mmHg at 25.0C.
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