Get college assignment help at uniessay writers what is the ph of a solution that is 0.100 M in HCl and also 0.125 M in HC2H3O2? What is the concentration of the acetate ion in this solution?
Solubility product constants
how do you determine the rate of reaction of 2 NaHCO3(s) H2SO4(aq) → Na2SO4(aq) 2 H2O(l) 2 CO2(g)
Sulfuric acid (H2SO4) is a very strong diprotic acid. If 0.052 moles of sulfuric acid is mixed with water to make 179 mililiter of solution, what is the molarity of H ? Answer in units of M.
Calculate the kinetic energy of CO, CO2, and SO3 at 294K.
If the mass of the metal cylinder pictured below is 18.71 g, calculate the density of the cylinder.
Aspirin, C9H8O4, is produced from salicylic acid, C7H6O3, and acetic anhydride, C4H6O3, as shown below. C7H6O3 C4H6O3 C9H8O4 HC2H3O2 (a) How much salicylic acid is required to produce 3.7 102 kg of aspirin, assuming that all of the salicylic acid is converted to aspirin? kg (b) How much salicylic acid would be required if only 69% of the salicylic acid is converted to aspirin? 412 kg (c) What is the theoretical yield of aspirin if 167 kg of salicylic acid is allowed to react with 123 kg of acetic anhydride? kg (d) If the situation described in part (c) produces 153 kg of aspirin, what is the percentage yield?
34.62 mL sample of .1510 molar NaOH was needed to completely neutralize 50 mL of an H2SO4 solution. what is the concentration of the origional sulfuric acid solution?
The standard molar heat of fusion for water is 6.009 kJ/mol. How much energy would be required to melt 2.45 ×105 kg of ice? Answer in units of kJ.
Calculate the Delta H for the reaction: SiO2(s) 4HF(g) yields SiF4 (g) 2H2O (g)
Get college assignment help at uniessay writers Open the editor below and draw the skeletal structure of the indicated species for the following transformations. http://www.webassign.net/userimages/kasandbe@ncsu/CH221_ssii_02/ch221_ex2_ss07_1b.gif Major organic product A? Major organic product B?
2 SO2 (g) O2 (g) 2 SO3 (g) how many grams of sulfur trioxide will be formed upon the complete reaction of 22.3 grams of oxygen gas with excess sulfur dioxide?
Three gases, hydrogen, argon, and methane are confined in a 8.00 L vessel at a pressure of 6.00 atm. The vessel contains 4.00 moles of hydrogen, 5.00 moles of argon, and 2.00 moles of methane. What is the partial pressure of methane?
which of the two amino groups in Procaine would be protonated first? why?
Calculate the answer to two sig. figs. The solubility of calcium fluoride is 2×10−4 moles per liter at 25◦C. Calculate its solubility product constant.
Calculate the answer to the correct number of sig. figs. A saturated solution of MX3 (of MW 150 g/mol) contains 0.0215 grams per liter. What is the solubility product constant of MX3?
how many moles of Fe2O3 are in 169 grams of the compound?
The solubility of PbF2 in water is 0.0021 mol/L. Ksp for PbF2 is closest to which of the following values? 1. Ksp = 2.1 × 10−3 2. Ksp = 2.0 × 10−4 3. Ksp = 9.2 × 10−9 4. Ksp = 4.4 × 10−6 5. Ksp = 3.7 × 10−8
For liquid mercury in a capillary tube, 1. the meniscus is concave and the cohesive forces are stronger than the adhesive forces. 2. the meniscus is convex and the cohesive forces are stronger than the adhesive forces. 3. None of these 4. the meniscus is convex and the adhesive forces are stronger than the cohesive forces. 5. the meniscus is concave and the adhesive forces are stronger than the cohesive forces.
Which one of the following substances is IN- CORRECTLY matched with the kind of solid that it forms? 1. potassium fluoride : ionic 2. octane : molecular 3. water : molecular 4. nickel : metallic 5. cesium iodide : covalent
Which one of the following statements is NOT applicable to covalent network solids? 1. The individual units in the solid are atoms rather than ions. 2. Covalent solids have low melting points. 3. Covalent solids do not conduct electric current well. 4. Covalent solids are very hard. 5. The bonding in covalent solids involves shared electrons.
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