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The density of air at ordinary atmospheric pressure and 25degrees celcius is 1.19g/L. What is the mass, in kilograms, of the air in a room that measure 12.5x19.5x9.0ft.
What is the PH of .0750L of hypochlorous acid/hypochlorite buffer solution, originally .300M in HCLO and .400M in CLO-. after 7.5E-3 moles of NAOH have been added to the buffer
An X-ray photon of wavelength 0.978 nm strikes a surface. The emitted electron has a kinetic energy of 975 eV. What is the binding energy of the electron in kJ/mol
Initially a container contains 0.75 M HBr and no product. What is the equilibrium concentration of HBr if the equilibrium concentration of H2 is 0.14 M
Write an orbital diagram for the ground state of the Calcium atom. Is this atomic substance diamagnetic or paramagnetic
Explain the large disparity in the numerical results pf Part (a). Discuss the advantages and disadvantages of the three energy sources.
A reaction has an activation energy of 110 kJ/mol and a rate constant, k=1.2 x 10^-12 s-1 at 0?C. At what temperature will the rate constant k=5.1 x 10^-7 s-1.
Assume for the purposes of this problem that, to be an alcohol (-ol) or an amine (-amine), the hydroxyl or amino group must be bonded to a tetrahedral (sp3 hybridized) carbon atom. Write the structural formula of a compound with an unbranched chai..
Using heat of fusion, specific heat of water, and/or heat of vaporization, calculate the amount of heat energy in each of the following. calories to condense 135 g of steam at 100^{circ}{rm C} and to cool the liquid to 15^{circ}{rm C} (two steps)
Using the Solubility Product Constants for Compounds at 25°C from Appendix II of our book, Determine which of the following compounds would be the LEAST soluble. a) Aluminum phosphate b) Calcium hydroxide c) Copper (I) cyanide d) Lead (II) chlorid..
A 50.00-mL sample of .1000 M KOH is titrated with .287 M HNO3. Calculate the pH of the solution after 52.00 mL of HNO3 is added.
For propanoic acid (HC3H5O2, Ka = 1.3 multiplied by 10-5), determine the concentration of the species present, the pH, and the percent dissociation of a 0.27 M solution.
To better understand why, scientists synthesized artificial protein mimics that were linked by ester bonds instead of the amide functionality ( the R-group side chains all remained the same). They found that these mimics did not form highly organi..
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