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A 1.195 g sample of an element contains 6.668 X 10^21 atoms. What is the element symbol?
If the sample of aqueous CdCl2 is electrolyzed using a cadmium metal anode and an iron metal cathode what are the expected results at each electrode
You have discovered a new element with an atomic weight of 260 g/mol and a density of 30 g/cm3. If the atoms pack on a BCC lattice what is the hard sphere atomic radius R (in nm)
an automobile gasoline tank holds 21 kg of gasoline. When gasoline burs, 81 kg of oxygen is consumed and carbon dioxide and water are produced. What is the total combined mass of carbon dioxide and water that is produced?
What is the mole fraction of ethanol in a solution made by dissolving 14.6 g of ethanol in 53.6 g of water?
Find the equilibrium concentrations of A and B for a=1 and b=1. Assume that the initial concentration of is a= 1.0 and that no b is present at the beginning of the reaction.
Calculate the heat given off by the burning Mg in kJ/g. b)Calculate the heat given off by burning Mg in kJ/mol
Combustion analysis of an unknown compound containing only carbon and hydrogen produced 1.1385 g of CO2 and 0.5805 g of H2O. What is the empirical formula of the compound?
Using the Nernst Equation, calculate the voltage for a concentration cell with Cu(s) I 0.01 M Cu2+ II 1.0 M Cu2+ I Cu(s) b. Why is the answer to the above not zero
How much energy (in J) is required to change the temperature of 1.00 kg Fe from 25.0°C to 1515°C? The specific heat capacity of iron is 0.449 J/g*°C.
A products, the general rate law is: rate = k[A]2. How long is the third half-life of the reaction if [A]0 is 0.080 M and the first half-life is 22 minutes?
Titrations: Finding Concentration, A 35.00 mL solution containing an unknown concentration of pyruvic acid required 25.13 mL of 0.2011 M NaOH to reach the end point.
The suppositions of the kinetic molecular theory are most likely to be incorrect for gasses under which of the subsequent conditions. Why
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