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How many mL of 50 wt% sodium hydroxide must be added to water to prepare 500 mL of a 0.400 M solution of sodium hydroxide? The density of the concentrated sodium hydroxide solution is 1.53 g/mL
How should a professional emergency responder be concerned about the following routes of radiation exposure for a person on scene and a person downtown?
Heterogeneous catalysts that perform hydrogenation reactions are subject to poisioning which shuts down their catalytic ability. Compounds of sulfur are often poisons.
What product or products would you expect to obtain by the addition of bromine to cis-cinnamic acid, assuming that it reacts by the same mechanism as the trans acid
A dead alkaline battery is found to contain a compound of Mn and O. Its analysis gives 69.9% Mn and 30.4% O. What is the empirical formula for the substance.
A student is asked to determine the formula of a hydrate of colbalt (II) chloride. The mass of the empty clean, dry crucible and cover, after heating is 22.446 g. A sample of 0.324 g of cobalt chloride is added to the crucible.
Carbon Monoxide gas reacts with water vapor to produce carbon dioxide gas and hydrogen gas. In an experiment, 0.500 mole of each component was added to a 1.00-L container. If K=23.2 for this reaction, calculate the equilibrium position.
Thyroxine, an important hormone that controls the rate of metabolism in the body, can be isolated from the thyroid gland. When 0.455g of Thyroxine is dissolve in 10.0g of benzene, the freezing point of the solutions depressed by 0.300C. What is th..
Sulfuric acid is a very strong inorganic used in commercial and non-commercial laboratories. What is the molarity of a 70.00 wt % solution of sulfuric acid in water? The density of the solution is 1.6503 g/mL.
How much heat is required to warm 223 g of ice from -44.3°C to 0.0°C, melt the ice, warm the water from 0.0°C to 100.0°C, boil the water, and heat the steam to 173.0°C?
Propose a structure for an amine of formula C4H9N, which liberates a gas when treated with NaNO2 and HCl. The 13C NMR spectrum is as follows, with attached protons in parentheses
if I weigh KHP to use in an experiment (to titrate with NaOH ) on a triple beam balance opposed to analytical scale to eventually find molar mass of unknown NH4 salt, what effect, if any, would this have on the accuracy of final results
they condense and then revaporize. During which of these steps is the concentration of the more volatile compound of the mixture increased?
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