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1. What property of a solution remains the same after it is diluted?
a) amount of solvent
b) total volume
c) amount of solute
d) concentration
2. How many grams of iron metal do you expect to be produced when 325 grams of an 87.5 percent by mass iron (II) nitrate solution reacts with excess aluminum metal? Show all of the work needed to solve this problem. 2 Al (s) + 3 Fe(NO3)2 (aq) ______ 3 Fe (s) + 2 Al(NO3)3 (aq)
3. How many grams of a stock solution that is 87.0 percent H2SO4 by mass would be needed to make 200 grams of a 35.5 percent by mass solution? Show all of the work needed to solve this problem.
4. Describe, in detail, how to make 2.0 liters of a 1.0 molar HCl solution from a 12.5 molar HCl stock solution.
5. How many moles of sodium chloride (NaCl) solute are in 315 grams of a 91.0 percent by mass solution?
a) 3.46 mol NaCl
b) 4.90 mol Nacl
c) 5.37 mol NaCl
d) 5.92 mol NaCl
Use le chatelier principle to explain why the buffer prevents large changes from occurring in pH when (a) an acid enters the blood stream (b) and base enters the bloodstream.
500.0 mL of 0.140 M NaOH is added to 625 mL of 0.200 M weak acid (Ka = 8.95 x 10-5). What is the pH of the resulting buffer
Concentrated aqueous HClO4 has a concentration of 14.8 M. Calculate the concentrations of all ions present in a solution prepared by pipetting 3.12 mL of concentrated HClO4 into a 1000. mL volumetric flask and filling to the mark.
when 9.8 g of aluminum oxide (Al2O3) decomposes, how many grams of aluminum metal are produced?
The equilibrium constant Kc for the reaction C--><-- is 5.10e-5. The initial composition of the reaction mixtures is [C]=[C]=[E]= 1.10e-3 M. What is the equilibrium concentration of C,D,E
calculate the escape velocity the minimum initial velocity that will take an object to infinity from the surface of a
how many grams of CrSO4 will be made from 41.0 grams each of Zn, K2Cr2O7, and H2SO4?
How to write half reactions what would occur if you made an electrolytic cell of the molten salts: NaCl,
Calculate the value of pKa for the acid HY at this temperature State and explain the effect on the pH of the buffer solution when a small amount HCl is added
Suppose 18.92mL of Na2S2O3 solution were necessary to titrate the iodine formed from 20.95mL of a 0.0100M KIO3 solution and excess KI, Explain what is the molarity of the Na2S2O3 solution
In older U.S. car total cylinder volume is expressed in cubic inches. compute the total cylinder volume in liters of a 454- cubic-inches engine.
the product gas from a solid fuel combustion reaction has the following dry-basis molar composition 72.0 co2 2.57 co
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