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1.1025g of dried carrots were extracted in HNO3. The extract was filtered and placed in a 50.00ml volumetric flask which was filled to the mark. 5.00ml of the solution was transferred to a second 50.00ml volumetric flask. The diluted solution from the second volumetric flask was found to contain 0.0274 mgNa/L.What is the concentration of Na in the first volumetric flask?What is the %Na in dried carrots?
A 2059-kg elevator moves with an upward acceleration of 2.0 m/s2. What is the tension in the cable that supports the elevator
Until 200 yr ago, manufactured iron contained charcoal produced from freshly cut wood that was added during the smelting process. As a result of this practice, older samples of iron can be dated accurately using the carbon-14 method
a container holds 2,0 of gas. the total average change in KE of gas molecules in the container is equal to the the sum of KE of an 8,0x10^-3 -Kg bullet with speed
Which anions generally do not form precipitates? What are the exceptions?
Determine the value of K (the thermodynamic equilibrium constant) at each temperature. b) Assuming that ?H°rxn is independent of temperature, determine the value of ?H°rxn from these data.
mixture(O,H) is ignited with a spark and it reacts to form (H2O)liquid water. determine the temperature of water.
How many grams of Ag2CO3 will precipitate when excess (NH4)2CO3 solution is added to 77.0 mL of 0.532 M AgNO3 solution?
The ionization constant Ka of benzoic acid is 6.3x10^-5. calculate th equilibrium concentrations of H+, benzote anion and benzoic acid. The initial concentration of benzoic acid is .10 M.
a gaseous compound is composed of 85.7% by mass carbon and 14.3% by mass hydrogen. its density is 2.28 g/L at 300 K and 1.00 atm pressure.determine the molecular formula of the compound.
What steps would you take to separate the following four organic compounds using an acid/base solvent extraction? Compounds: m-anisic acid, p-toluidine, thymol, indane
The solubility of AgBrO3 in aqueous solution depends on the presence of other substances in solution. Relative to its solubility in H2O the solubility of AgBrO3
A microwave oven operates at 2.00GHz . What is the wavelength of the radiation produced by this appliance. Express the wavelength numerically in nanometers.
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