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For one line of the hydrogen spectrum is .4118 x 10-4 cm. Use this value in the Rydberg equation to calculate the RH value using n1 = 2, and n2 = 3.
What is the total mass of each of these elements in the Earth's crust (1 t = 1000kg)?
A coffee cup calorimeter is being used in this lab despite the fact that one of the reactions produces gas. Calculate the work done using the information
calculate the specific heat of a substance if a 35 gram sample absorbs 28 joules as the tempature is raised from 292 kelvin to 313 kelvin.
How many milliliters of 20.0 M calcium chloride would you use to prepare exactly 800 ml of a solution that contains 5.00 moles/liter of chloride ions.
The density of ethanol is 0.7893 g/mL. Calculate the maximum work that could be obtained by burning 1.000 gallon of liquid ethanol
Determine the number and symmetry of the vibrational modes in the molecule (trans-1,2-dichloroethylene). how many resonances would you expect to see in the IR spectrum
Comparing potassium nitrate (KNO3) and sodium chloride (NaCl), which chemical's solubility (in water) is most affected by change in temperature.
A 1.20 sample of dry ice is added to a 745 mL flask containing nitrogen gas at a temperature of 25.0 C and a pressure of 735mmHg .
Calculate E for the cell. Assume all the H+ ions come from the first dissociation of H2SO4, which is complete.
If delta H for the reaction is -851.5 kJ/mol at 25'C, calculate the standard free energy change, delta G for the reaction at 25'C. Calculate the temperature at which the reaction changes from spontaneous to non-spontaneous.
an aqueous solution is prepared by diluting 3.30mL acetone, CH3COH3, (d= 0.789g/mL) with water to a final volumeof 75.0 mL. The density of the solution is 0.993 g/mL. what are the molarity and the molality of acetone in this solution?
sodium sulfate how many grams of solid ppt will be formed. How many grams of reactant in excess will remain. What is chemical equation
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