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Gallium-68 decays by positron emission, with a half-life of 68.3 min. How much 68Ga remains from a 10.0 mg sample after 683 min?
Use the standard half-cell potentials listed below to calculate the standard cell potential for the following reaction occurring in an electrochemical cell at 25°C.
The formula Co(NH3)5CO3Cl could represent a carbonate or a chloride: write the two formulas, draw the two structures and name them below.
Draw Lewis structures of the four molecules and/or ions with the formulas given below and figure out which two of these are isoelectronic with each another.
molecular equation, complete ionic equation, and net ionic equation for: Sodium carbonate + sulfuric acid Cadmium chloride + sodium hydroxide Hydrochloric acid + sodium hydroxide Ammonium chloride + sodium hydroxide Sodium acetate + sodium hydroxi..
what is the concentration of (HOCl), at equilibrium if 0.0230 mol of H2 and 0.0230 mol of ClO2 are initially placed in a 5 L vessel? What is the concentration of ClO2 in the above problem at equilibrium?
What is the percent-yield of H2 in the reaction below when an equimolar mixture of CH4 and CO2 with an initial total pressure of 20.0 atm reaches equilibrium at 1200. K, at which Kp = 3.548 x 106
A sytringe contains 589 mL of CO at 325K and 1.2 atm pressure. A second sytringe contains 473mL of n2 at 298K and 2.6atm. What is the final pressure if the contents of tese two syringes are injected into a 1.00L container at STP
Enter balanced molecular, ionic, and net ionic equations for the following pairs of reactants. If all ions cancel, indicate that no reaction (N.R.) takes place.
If a buffer solution is 0.260M in a weak base (Kb=5.6x10^-5) and 0.550M in its conjugate acid, what is the pH.
In a beaker of boiling water, there are many gas bubbles forming throughtout the liquid. What gas comprises the bubbles.
If a bottle of nail polish remover contains 172 of acetone,how much heat would be released by its complete combustion? The density of acetone is 0.788 .
balanced chemical equation for the aqueous neutralization of hydrochloric acid with sodium hydroxide forming sodium chloride and water
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