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After 52.0 min, 18.0% of a compound has decomposed. What is the half-life of this reaction assuming first-order kinetics?
Calculate the freezing point of 0.15 m calcium chloride aqueous solution. Assume that the molal freezing point depression constant of water is 1.86°C•kg/mol and that the freezing point of water is 0.00°C.
Explain why light intensity is dependent on the distance the detector is from the light source. Describe the mathematical relationship.
Find concentration of each ion present in the solution formed by mixing: 44.0 mL of 0.150M Na2SO4 and 25.0 mL of 0.200M KCl.
The Kb of ammonia is 1.8 x 10-5. What is the percent ionization of a solution of ammonia, 0.50 mol L-1 NH3, that contains 0.020 mol L-1 of ammonium nitrate, NH4NO3
Draw both extended and Fischer representation of each of these compounds.
A 50.00-mL sample of aqueous Ca(OH)2 requires 34.66 ml of a 0.966 M nitric acid for neutralization. Calculte the concentration (molarity) of the original solution of calcium hydroxide
If the groundwater at the top of the saturated zone is in equilibrium with air, calculate the concentration of m-Xylene in the air in mol/L
Determine the pH of a solution prepared by adding 0.0500 mole of solid ammonium chloride to 100 mL of a 0.150-molar solution of ammonia.
a.) Available Electrons (AE) b.) Needed Electrons (NE) c.) Geometry Description d.) Number of sigma bonds e.) bonding description f.) lewis dot structure
The solubility of solute in a solvent depends on various parameters, such as temperature, pressure, the nature of the solute, and the nature of the solvent. Considering these parameters, identify the statements that are correct for the solubility ..
The following data were obtained for the determination of iron in serum by a spectrophotometeic method. Assuming the validity of Beer's Law for the experiment calcualte the concentration of iron in serum
HOw many Doritos chips would you have to burn to heat up a pool with the dimensions 50' by 20' by 8'? 37.57 kilocalorie/gram and 75.52
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