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A 190 ml sample 2.3M NaCl is mixed with 350ml of a SrCl2 solution. If the final solution has a chloride ion concentration of 1.80M which choice is closest to the concentration of the original SrCl2 solution? (Assume volumes are additive).
A. 1.52M
B. .764M
C. 1.2M
D. .493M
E. .569M
What is the number of moles of atoms of oxygen contained in 49 grams of sulfuric acid, H2SO4?
Complete and balance the equation for this reaction in acidic solution. Phases are optional.
A chemistry student needs 60.00 mL of chloroform for an experiment. By consulting the CRC Handbook of Chemistry and Physics, the student discovers that the density of chloroform is 1.48 g x cm^-3.
A student reacted 0.22 g of zinc (Zn) with excess hydrochloric acid (HCl) to generate hydrogen gas (H2).
The first ionization energy of bismuth is Ei1 = +703 kJ / mol. What is the longest possible wavelength of light that could ionize an atom of bismuth?
The standard molar enthalpy of vaporization for water is 40.79 kJ/mol. What mass of steam is required to release 500. kJ of energy upon condensation? (Molar mass of water is 18.02 g/mol.)
Estimate the pH at the equivalence point of an HOAc solution if 25.5 mL of this solution required 37.5 mL of 0.175 M NaOH to reach the equivalence point (Ka = 1.8 x 10-5).
If one mole of ATP yields 7 kcal of energy, how much energy would be available from the anaerobic catabolism of 270 g of glucose (C6H12O6)? Show your work.
Would applying a high pressure stabilize the CsCl form, or the NaCl form of this compound? (hint: calculate the volume per formula unit)
Calculate the number of grams of sulfuric acid in 0.460 of battery acid if the solution has a density of 1.27 and is 37.8 sulfuric acid by mass.
Determine the range of fat you might expect to obtain if you extracted fat from ten grams of nutmeg (Dried, ground nutmeg typically contains between 20-25% fat by weight.) Assume that your extraction is 95% effective.
A saturated solution of Na2SO4 with excess of the solid is present in equilibrium with its vapor in a closed vessel. Calculate the number of degrees of freedom, f, of the system.
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