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A student performs a calorimeter calibration using an electric heater. When a voltage of 30 V is applied to the heater for 3.0 min, a constant current of 2.5 A is observed. The calorimeter temperature increases from 20.00C to 25.59C. Calculate C_bomb for the calorimeter. Assume 2000.0 g of water in the bucket.
explain why water is not plotted on the delta t versus molecular mass graph in the analysis .(hint:what makes water different from the other 3 solvents?
Calculate the ratio as the conformation present in a higher concentration over the lower one
Using a flow diagram, show the separation of a mixture containing p-bromoacetanilide, N-cyclopentyl-N-methyl-N-propylamine (N mean the group is attached to the nitrogen of the amine and m-nitrophenol. Specify the organic solvent and aqueous soluti..
Water and toluene are very good recrystallization solvents. Why is it not useful to use these solvents for a ‘quick' recrystallization?
The following reaction is endothermic in the forward direction. NH4Cl(s) NH3(g) + HCl(g) For each of the following cases, briefly explain whether the action causes net reaction from left to right, right to left, or no net reaction.
What volume (V) of 1.80 M NaOH solution must you add in order to prepare an acetate buffer of pH = 4.87? (The pKa of acetic acid is 4.76.)
A 51.0-mL volume of AgNO3 solution contains 0.0273 mol AgNO3 (silver nitrate). What is the molarity of the solution.
A system that had work done on it but which receives or loses no heat from or to the surroundings has
Oxidation of A with KMnO4 gives CO2 and the keto carboxylic acid D shown below. Propose a structure for A.
The equilibrium constant Kp is measured (at an unspecified temperature) to be 0.66 for the reaction:
Determine how do you find out the new freezing point of a solution if given the formula is Delta T = m x kf x i but how do you find it how does it work?
What volumes of the 0.10 M HA and 0.10 M NaA solution should be mixed to prepare the buffer?
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