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The final temperature of an experiment using a coffee cup calorimeter is 16.0 degrees Celsius. The mass of NaNO3 used is 8.5866 grams. Calculate q(system), using 4.184 J/(g x C) and 1.0 g/mL for the specific heat and density of the solution and 1.0 x 10^1 J/C for the heat capacity of the calorimeter.
Given an unknown sample of a solid, how would you decide that it is necessary to do a recrystallization. recystaillization-Why must you use a minimal amount of hot solvent
The metal aluminum is made commercially from al2o3. what weight of Al goes 1.00kg of this metal oxide contain
A solution is prepared by dissolving 1.29 g of an unknown organic compound in 15.00 g of cyclohexane. What is the molar mass of the compound if the solution has a melting point of -5.1°C
0.158g of a barium halide is completely precipitated out of H2SO4 and 0.124g of barium sulfate are produced. what is the true formula of the compound.
The soution in contact with the graphite electrode consists of dissolved Sn(NO3)2. The solution in contact with the copper electrode consists of dissolved CuNO3.
write a balance chemical equation for the combustion of 1 mol glycerin, and calculate delta H for this reaction at 298K if burning 1.24g of glycerin has a delta E of -54.6 kj
Determine the energy of 1.70 of photons for each of the following kinds of light. (Assume three significant figures.)
a solution was prepared by mixing 50 ml of 0.100 M HCl with enough water to get 250 ml solution . what is the M of the final solution of hydrochloric acid?
a sample of co2 g in a piston at 7.5 atm and 1090. l is allowed to come to equilibrium against a constant external
At what temperature will He atoms have the same Crms value as N2 molecules at 25 degrees Celsius? Solve this problem without calcularing the value of Crms for N2. Crms is the root mean square speed.
Calculate the volume of a 2.00 M KOH solution needed to neutralize 40.0 mL of a 0.600 M H2SO4 solution.
Write the net ionic equations for & the reactions occurring for each cation in the group.
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