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I titrated a solution of 25.0 mL of a 0.050 M NaOH solution containing Ca(OH)2 using...
A solution of 0.049 M NiBr2 is saturated with H2S. ([H2S] = 0.087 M. Assume saturation...
A solution is 0.0010 M in both Ag+ and Au+. Some solid NaCl is added slowly...
Is caffeine soluble in a nonpolar solvent? why?
explain how size exclusion chromatography can be used to change the buffer of a protein sample...
The dissolution of aspirin tablet is controlled by the diffusion of the drug into the surrounding...
1) Spingospine 1-phosphate (SPP) has recently been discovered to be important for the cell survival. The...
Calculate delta G at 82 C for reactions in which a. delta H = 293 kj...
Given no other information, Calculate the age of a sample that has only 76% of its...
Phosphorus pentachloride decomposes according to the chemical equation. A 0.153 mol sample of PCl5(g) is injected...
A 100.0 mL sample of 0.10 M NH3 is titrated with 0.10 M HNO3. Determine the...
A compound is found to contain 15.12 % phosphorus , 6.841 % nitrogen , and 78.03...
illustrate the molecular mechanism through which muscle contraction (exercise) activates glycogen phosphorylase
Consider the following reaction: 2 A + 3 B2 ⇌ A2B6 The initial concentrations of...
High priority please! I need balanced equation and theoretical yield for the reaction of 5.0280g of...
LP gas burns according to the following exothermic reaction: C3H8(g)+5O2(g)→3CO2(g)+4H2O(g)ΔH∘rxn=−2044kJ What mass of LP gas is...
Find ΔG for melting ice at 0°C and 100 atm. At this temperature and pressure conditions,...
1. 20.00 mL of 0.510 M NaOH is titrated with 0.740 M H2SO4. ______ 1 mL...
Imagine that you are in chemistry lab and need to make 1.00 L of a solution...
(a) Select all of the correct statements about reaction rates from the choices below. 1.The lower...
A certain rifle bullet has a mass of 6.21 g. Calculate the de Broglie wavelength of...
A sample of nitrogen occupies a volume of 300ml under a pressure of 380 torr at...
Consider a solution that is 2.1×10−2 M in Fe2+ and 1.6×10−2 M in Mg2+. Part A...
Use the table of standard reduction potentials given above to calculate the equilibrium constant at standard...
A gas stream contains 40 mol% n-hexane in nitrogen (N2) and flows at 6600 L/min, 60◦C,...
An electrolysis cell that deposits gold (from Au+(aq)) operates for 10.0 minutes at a current of...
Determine what occurs at each electrode in the electrolysis of molten sodium chloride. Match A,B,C,D with...
1)Describe the generalized Friedel-crafts reaction. 2)specifically for dimethoxybenze, why is it difficult to stop the reaction...
Calculate the cell potential for the following reaction as written at 25.00 °C, given that [Zn2...
A derivative of the polysaccharide chitosan is being utilized in a spray to treat severe wounds....
Hot air balloons rise because their density is less than the density of air, indicate which...
What is the significance of the equilibrium constant? What does a large equilibrium constant tell us?...
Oxides of sulfur are important in atmospheric pollution, arising particularly from burning coal. Use the thermodynamic...
The following reactions can be coupled to give alanine and oxaloacetate: glutamate + pyruvate ↔ ketoglutarate...
Explain why each change in conditions would affect the reaction rate of reaction when sodium metal...
Using the appropriate gas law , explain why there are warnings on aerosol can instructing not...
QUESTION 1: A buffer is prepared by mixing 192 mL of 0.452 M HCl and 0.485...
How is the manipulation of thermodynamic derivatives related to snowboarding? [Suggested key words: mountain, snowboard, downhill,...
A)In the laboratory a student uses a "coffee cup" calorimeter to determine the specific heat of...
1. What is half cell reaction (both left and right) and the net cell reaction from...
Aqueous sulfuric acid H2SO4 will react with solid sodium hydroxide NaOH to produce aqueous sodium sulfate...
The experiment calls for preparing one of two salts, either copper(ii) sulfate or potassium aluminum sulfate....
Calculate the standard enthalpy changes for the combustion of a mole of methane and the combustion...
ΔG° and E° can be said to measure the same thing, and are convertible by the...
What are the advantages of synthetic detergents compared to ordinary soap?
0.050 M HCl Volume at equivalence point = 10.37 mL Volume of Ca(OH)2 used in the...
Explain why the free fatty acids derived from some soaps solidify, while others remain liquid. Give...
Consider a voltaic (galvanic) cell with the following metal electrodes. Identify which metal is the cathode...
A voltaic cell contains two half-cells. One half-cell contains a nickel electrode immersed in a 1.00...
A device used in radiation therapy for cancer contains 1.24 g of cobalt 2760Co (59.9333819 u)....
What would be the change in entropy (if the change is zero, explain why, if not...
Calculate the pH of a 0.0560 M solution of Fe(NO3)2 The acid ionization constant for Fe(H2O)62+(aq)...
At a certain temperature, the half-life of the first order decomposition of iso-propanol (shown below) is...
Identify the ions associated with the following ionic compounds, indicate the common charge on each ion.Examples:...
Calculate the ph for the following solutions: 0.10 M NH3 50 mL 0.10 M NH3 +...
Methane is flowing in a pipeline at a target rate of 20.7 m3/min at 30°C and...
Galvanized steel, used in construction and infrastructure, consists of steel (mostly iron) coated with an outer...
what desirable properties should an ideal stationary phase have? list 4 different kinds of measures that...
Prepare a buffer by acid–base reactions. Consider how to prepare a buffer solution with pH =...
Prepare a buffer by acid–base reactions. Close Problem Consider how to prepare a buffer solution with...
Prepare a buffer by direct addition. Consider how best to prepare one liter of a buffer...
How would the calculated molarity for NaOH be affected (higher, lower, or no change) if the...
Calculate the pH of 520. mL of a 0.447-M solution of hypochlorous acid before and after...
A quantity of CO gas occupies a volume of 0.66 L at 1.3atm and 303 K...
When 10.0 g of calcium metal is reacted with water, 5.00 g of calcium hydroxide is...
We are doing a synthesis lab of isopentyl acetate (bannana oil) 1.When heating to form isoamyl...
The ΔH of reaction for the combustion of glucose (C6H12O6) and of sacharose (C12H22O11) are respectively...
Use the oxidation number method to balance the equation below. What is the coefficient of PbO...
Combustion of ocane follows the reaction: 2C8H18(l) + 25O2(g) --> 18H2O(g) + 16CO2(g) When 12.3L of...
including all states of matter.A. solid calcium carbonate, CaCO3, reacts with sodium hydroxide (NaOH) to form...
Assuming that the smallest measurable wavelength in an experiment is 0.410 fm (femtometers), what is the...
What is the density of Xe gas at 0.00 degrees Celsius, at a pressure of 563...
In a reserved-phase column, a solute was found to have a retention time of 31.3min while...
The enthalpy of combustion of octane is 5074.9 kJ/mol and its density is 703 kg/m3. On...
Acetic acid has a Ka of 1.8×10−5. Three acetic acid/acetate buffer solutions, A, B, and C,...
A cell membrane at 25C is found to be permeable to Ca2+ but not to anions,...
HBr is a stronger acid than HCl. Which of the following explanations best presents the causality...
a) A calorimeter was calibrated with an electric heater, which supplied 22.5 kJ of energy as...
Consider a 0.317L solution of the amino acid glutamic acid(0.575M), which has the alpha carboxylic group...
A solution of an unknown acid is prepared by dissolving 5.573 g of the solid acid...
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