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1. Determine the concentration as a percentage by volume if a 600. mL bottle of vinegar contains 30.0 mL of acetic acid.
2. Calculate the molar concentration of a 5.40 L solution that contains 38.5 g of dissolved sodium hydrogen carbonate.
3. As part of an experiment, you need to make 150 mL of a 0.750 M ammonium hydroxide solution from an existing stock solution with a concentration of 9.25 M. What volume of concentrated ammonium hydroxide is required?
4. What volume of 0.250 M copper(II) chloride solution is required to react completely with 6.75 g of aluminum in a single displacement reaction?
A hypothetical element consists of two isotopes of masses 86.95 amu and 88.95 amu with abundances of 35.5% and 64.5%, respectively. What is the average atomic mass of this element?
Draw a 3-dimensional sketch, using dashes and wedges. Be sure to show all atoms (no line drawings), to draw pi bonds (with sets of overlapping p orbitals) and to include the orientation of lone pairs of electrons.
Problem- Calculate the standard potential of the cell consisting of the Wn / Zn2+ half-cell and the SHE. What will the emf of the call be if : Zn2+ = 0.22 M , PH2 = 1.2 atm and H+ = 1.7 M
Question- An iodine solution was standardized using ascorbic acid. The mass of ascorbic acid was 0.1021g and the volume of iodine solution used was 25.45 mL. What is the concentration of the iodine solution
what type of salt does copper oxide produce?
Solid lead(II) sulfide reacts with aqueous hydrochloric acid to form solid lead(II) chloride and dihydrogen sulfide gas. Express the answer in a balanced chemical equation with all phases identified.
The rate of disappearance of HBr in the gas phase reaction is 0.103 Ms-1 at 150 deg Celsius. what is the rate of reaction.
If 1.87 {rm g} of acetic acid (rm CH_3CO_2H) reacts with 2.31 {rm g} of isopentyl alcohol (rm C_5H_{12}O) to give 2.96 {rm g} of isopentyl acetate (rm C_7H_{14}O_2), explain what is the percent yield of the reaction
write equations that show a plausible reaction mechanism for the acid-catalyzed isomerization of maleic acid
looking for a good introduction for this lab and any random data showing the results on how to calculate the equilibrium constant for the reaction shown above.
What is the standard free-energy change ?G° at 25°C? (c) Calculate the equilibrium constant Kp at 25°C. (d) Calculate the equilibrium constant Kc at 25°C. (e) Calculate the temperature at which HgO decomposes to O2 at 1atm.
write the acid ionization equation and ionization conexpression for the hydrogen carbonate ion
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