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A student dissolves a 6.58g sample of solid sodium hydroxide in 127.3g of water. Assuming that there is no heat exchanged with the surroundings, how much energy is given off? Show your calculations. The heat of solution for solid sodium hydroxide is 44.5kJ/mol.
For an aldol reaction, the key step is the attack on the partially positive carbonyl carbon by a nucleophile. Rank benzaldehydes by their reactivity in an aldol reaction.
what is ture when equal masses of a and b are reacted?
What is the minimum volume of dripping water saturated with calcium carbonate that would be required to form a small stalactite that had a mass of 1.000 kg?
Which of the following will not have ionic bonds?
The gas plus vapor at its equilibrium partial pressure leaves the liquid at the same temperature and pressure. If 6.550 g of acetone has evaporated, what is the vapor pressure of acetone at 25 degrees Celsius?
Calculate the equilibrium concentration of Zn2+(aq) in a solution that is 0.0125 M Zn(NO3)2 and 0.600
Assume that a particular reaction evolves 239 kJ of heat and that 27 kJ of PV work is gained by the system. what are the values of delta H and delta E? Assume that a particular reaction evolves 239 kJ of heat and that 27 kJ of PV work is gained..
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.
a 10-mL graduated cylinder (where volumes can be read to the nearest 0.1 mL). Calculate the required quantity of each reagent and the volume of water that must be added for dilution.
A chemistry lab experiment requires 36.3 g of silver nitrate. How many grams of a 12.5% by mass solution of silver nitrate should be used?
Calculated what is the pressure in atm using the van der Waals' equation for Oxygen gas under these conditions? For O 2 , it is given a = 1.360 L2atm/mol2 and b = 3.183E-2 L/mol.
a surface for which static coefficient of friction is 0.62. The ropes are massless. What is the Maximum mass of block A for which the system is in equilibrium?
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