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According to Archimedes' principle, the mass of a floating object equals the mass of the fluid displaced by the object. A swimmer is floating ina nearby pool; 95% of her body's volume is in the water while 5% of herbody's volume is above water. Determine the density of the swimmer's body.The density of water is Does your answer make sense? Whyor why not?
which of the following processes are exothermic?
A 1.000-mL aliquot of a solution containing Cu2 and Ni2 is treated with 25.00 mL of a 0.04068 M EDTA solution. The solution is then back titrated with 0.02053 M Zn2 solution at a pH of 5
A 25.0mL sample of a citrus beverage is being analyzed for ascorbic acid(molar mass=170g/mol) by titration with KIO3. 15.5mL of a 0.121M KIO3 are dispensed to reach the blue endpoint. How many mg of ascorbic acid were in those 25mL
Formalin is an aqueous solution of formaldehyde, HCHO, used as a preservative. How many grams of formaldehyde must be used to prepare 2.5 L of 12.3 M solution
An element crystallizes in a face-centered cubic lattice. The edge of the unit cell is 392 pm, and the density of the crystal is 21.45 g/cm3. Calculate the atomic weight of the element (in g/mol)
For silver metal, the velocity of electrons emitted utilizing 200 nm photons is 7.42 x 105 m s-1. Compute the work function of silver in eV.
Draw the structures of salicylic acid and aspirin. Circle and identify the functional groups present in each compound and sulfuric acid is a catalyst. What does that mean?
BrO2- depicts the molecule by placing atoms on the grid and connecting them with bonds. Comprise all lone pairs of electrons. Demonstrate the formal charges of all atoms in the correct structure.
State the balanced equation for the ionization of the weak base pyridine, C5H5N in water, H2O. Phases, such as (aq) or (l) are optional.
An empty beaker weighs 41.19 g. When it is completely filled with water (density = 1.0 g/mL), the beaker weighs 92.92 g.
Which anion gives precipitate with Ba+2 ion? Iv) Which anion evolves a gas when acid is added? V) Which anion releases an odorous gas as a product?
A 25.0 mL aliquot of an FeSO4 solution is titrated against standard 0.0100M K2Cr2O7 solution using diphenylmethane indicator. At the end point 23.oo mL of K2Cr2O7 solution have been consumed. Calculate the normality and the molarity of of the FeSO..
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