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Based on the correct answers to the two previous questions, use the "reduction Potentials" table at...
Compare the equations for calculating freezing point depression and boiling point elevation. Illustrate the difference by...
Melamine concentration in milk samples was determined spectrophotometrically. It was determined to be 1.35 ppm, 1.075...
A compound dissolved in methanol and need to remove by distillation because heat is sensitive, a...
the concentration of the cyanobacteria toxin ß-n-methylamino-l-alanine (bmaa) was measured in ground water and found to...
NH3 is a weak base (Kb = 1.8 × 10–5) and so the salt NH4Cl acts...
How would you make a 750.0 mL of a buffer at pH 9.00 if you had...
1. The free radical chlorination reaction of 2,3-dimethylbutane leads to the production of two major monochlorinated...
The chemical reaction [Zn(OH)2(s) ←→ Zn2+(aq) + 2OH- (aq) 1. Why did you add 1M HCl...
The chemical reaction [Zn(OH)2(s) ←→ Zn2+(aq) + 2OH- (aq) 1. Why did you add more 1M...
A student uses 3.00g of a fertilizer with an NPK ratio of 15-15-10, how much MgNH4PO4*6H2O...
Consider the reaction X + Y → Z From the data in the table, obtained at...
Saponification is a process that quickly converts the burning substance to a non combustible soap. Once...
An aqueous solution with a specific gravity of 1.12 flows through a channel with a variable...
Describe the differences between a synthesis and a crystallization.
The neutralization of H3PO4 with KOH is exothermic. 70.0 mL of 0.227 M H3PO4 is mixed...
An element crystallizes in a body-centered cubic lattice. The edge of the unit cell is 3.37...
Which of the following solutions will form a precipitate when added to Ba(NO3)2? KOH, NaC2H3O2, KNO3,...
Gold is a face-centered cubic structure that has a unit cell edge length of 4.08 Å....
The total volume of the Pacific Ocean is estimated to be 7.2 × 108 km3. A...
Butylated hydroxytoluene (BHT) is used as an antioxidant in processed foods. A solution of 2.500 g...
The titration curve for a 25.0 ml sample of benzoic acid shows that 10.0 ml of...
Suppose that 1.15 g of rubbing alcohol (C3H8O) evaporates from a 69.0 g aluminum block. If...
Based on their activation energies and energy changes and assuming that all collision factors are the...
Standard # Volume of 0.00020 M FeCl3 (mL) Volume of 2 M HCL (mL) Blank 0...
The concentration of H3O+ in our blood must be maintained at a relatively constant value so...
Sucrose (C12H22O11), which is commonly known as table sugar, reacts in dilute acid solutions to form...
When you mix together hydrogen peroxide and iodide the resulting solution will turn yellow/brown. This is...
A 1.00 L container holds 0.015 mol of H2 (g) , 0.015 mol of I2 (g),...
n the experiment, you will be measuring the time it takes for the solution to turn...
Find the [OH-] and pH of a 0.66 M methylamine solution
How many moles of O2 will be released if a liter of blood containing 45 g...
How many grams of Na2CO3 (FM 105.99) should be mixed with 6.41 g of NaHCO3 (FM...
How many gram of silver iodide can be made from 4.45 grams of silver
Calculate the pH of 0.242 M piperazine (C4H10N2, a di-basic compound, "B"). Calculate the concentration of...
Determine the total nitrogen concentration in mg/L of a water sample containing 1.3 mg/L ammonia, 0.25...
When the Nickel (II) ion reacts with ammonia, most students notice only a color change occurring....
Determining Conc. of DNA: A260 of 1.0 = 50µg/mL or 50ng/µL Question: A DNA sample is...
A 2.540 g sample of an oxide of tin was heated in the air until the...
Consider the following reaction: 2NO(g)+2H2(g)→N2(g)+2H2O(g). If the rate constant for this reaction at 1000 K is...
Alpha emission from bismuth-189: 18983Bi→42He+? Express your answer as a nuclear equation.
This problem is similar to the previous problem, but the parameter values are slightly different. Once...
A solution was prepared by dissolving 25.00 g of glucose in 200.0 g water. The molar...
According to coulomb's law, which pair of charged particles has the lowest potential energy? a. A...
Magnesium will burn in air to form both Mg3N2 and MgO. What mass of each product...
A 150.0 mL buffer solution containing 0.100 M hydrocyanic acid (HCN, Ka = 6.2 x 10-10)...
How many milliliters of 5.5 M HCl solution are needed to obtain 0.14 mol of HCl?...
For the reaction below, the thermodynamic equilibrium constant is K = 0.000708 at 30 °C. NH4CO2NH2(s)...
Grignard reaction questions? a. Give equations for a detailed procedure showing the conversion of 1-bromoheptane to...
The pH of a very concentrated solution of a base M(OH)2 at 25 degree C is...
Part A For the reaction 2CH4(g)⇌C2H2(g)+3H2(g) K = 0.140 at 1595 ∘C . What is Kp...
2. When illuminated by UV-Vis light, why do the organic compounds show up as a dark...
A concentration cell is built based on the following half reactions by using two pieces of...
How does telomerase prevent DNA shortening
Suppose you have a bucket of sand containing 9.5 billion grains of sand (9.5 × 109...
When heated, KClO3, decomposes into KCl and O2, if this reaction produced 65.0g of KCl, how...
The pKb values for the dibasic base B are pKb1 = 2.10 and pKb2 = 7.65....
Calculate the % yield if 1.06 moles of Na reacts with 0.17 moles of O2 to...
How many milliliters of boiling water are required to dissolve 3.3 g phthalic acid? If the...
An experiment on the vapor-liquid equilibrium for the methanol (1) + dimethyl carbonate (2) system at...
What is the molarity of a 2.351 m ammonium nitrate solution? (d = 1.104 g/mL)
Question 1: In appreciation of you taking my General Chemistry class I want to gift each...
6. a. Calculate the pH of a solution prepared by diluting 2.1 mL of 2M HCl...
For the association of a ligand, L, to a membrane receptor, R: L + R 1...
A 425 mg sample of a weak diprotic acid is dissolved in enough water to make...
A .025 mol sample of a weak acid, HA, is dissolved in 485 mL of water...
The vapor pressure, ?P, of a certain liquid was measured at two temperatures, ?T. The data...
The titration curve for a 25.0 ml sample of benzoic acid shows that 10.0 ml of...
A student had difficulty decanting the supernatant solution from some test tubes, causing him to transfer...
What is the pH of a 0.182 M aqueous solution of ammonium iodide, NH4I ? pH...
In forming an acid chloride from a carboxylic acid the acidic hydrogen atom is replaced by...
The pH of an aqueous solution of 0.402 M triethylamine (a weak base with the formula...
Carbonyl fluoride, COF2, is an important intermediate used in the production of fluorine-containing compounds. For instance,...
4. You decide to try to separate 0.100 M Hg22+ (pKsp = 17.91) from 0.0750 M...
What is the normal boiling point of an aqueous solution that has a freezing point of...
a cook uses a microwave oven to heat a meal. The frequency of the radiation is...
A solution is prepared from 4.5715 g of magnesium chloride and 43.236 g of water. The...
1. What is the purpose of crystallization in an organic chemistry procedure? 2. Using the solubility...
Find the percent ionization of a 0.500 M HC2H3O2 solution at 25 degrees C. Please use...
Starting with the Maxwell Distribution of Energies, find an expression for Erms(root mean square energy). Use...
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