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Problem- Calculate the amount of heat required to completely sublime 77.0g of solid dry ice (CO2) at its sublimation temperature. The heat of sublimation for carbon dioxide is 32.3 kJ/mol.
Express your knowledge to solve the above question
This sample is first heated to 100.0 degrees C, then added to a coffee cup calorimeter containing 35.0 g of water at 20.8 degrees C. The highest temperature observed is 31.0 degrees Celcius. a) Calculate the specific Heat of the lead
What is delta H rxn/mol Mg for the following reaction. Mg + 2HCl -> MgCl2 + H2 if 0.158 g Mg reacts in 100.0 mL of solution and changes the temperature from 25.6 °C to 32.8 °C
Icebergs in the North Atlantic present hazards to shipping, causing the length of shipping routes to increase by about 30 percent during the iceberg season.
a reaction vessel of volume 20.0 l contains 5.0 mol of nitrogen gas 3.0 mol of hydrogen gas and 2.5 mol of oxygen gas
4.75 grams of NaOH are added to 25.0 ml of water in a volumetric flask. 10.0 ml of resulting solution are removed as well as diluted to a final volume of 100.0 ml. Explain what is the concentration of NaOH in the final solution
Hydrogen iodide can decompose into hydrogen and iodine gases. 2 HI(g) f H2(g) + I2(g) Kp = 0.016 If 0.820 atm HI(g) is sealed in a flask, what is the pressure of each gas when equilibrium is established
The bromination solution is prepared by mixing liquid bromine with glacial acetic acid 1:4 v/v (bromine to acid). The density of bromine is 3.12 g/mL. Calculate the molarity of 1.00 L of bromine solution.
A student breaks a thermometer and spills mercury onto the floor of a lab that measures 6.1 m x 5.3 m x 3.1 m. What is the mass of mercury in grams that is vaporized at equilibrium AND what is the concentration of mercury in mg/m3
A machine does 300.0 kJ of work on the environment, and emits 200.0 kJ of heat. What is the change in internal energy of the machine?
What volume of a 0.23 M solution of copper sulfate is needed to contain 3.21 millimoles of copper sulfate?
The reaction previously done was just having trans-cinnamic acid reacted with Br2 forming all the isomers with the double bond being broken and Br put into place.
We have a 0.0100 M solution of ammonium acetate (Nh4C2H3O2), an ionic compound that dissociates completely in water. The ammonium cation is a weak acid (pKa=9.24) and the acetate anion is the conjugate base of acetic acid, another weak acid (pKa=..
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