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How to calculate experiment yield and theoretical yield for this problem?
If a student were to recover 22% trimyristin from a 10.0g sample of nutmeg, answer the following questions: 1. What is the experimental/actual yield of trimyristin from this solid/liquid extraction? 2. If you utilized a saponification (hydrolysis) reaction to generate myristic acid and glycerol from the recovered trimyristin (see hydrolysis reaction scheme below), what w
Rank the solvent systems best to worst in SN1 reactions.
The solvent systems are: 1:1 ethanol: water, 1:1 methanol: water, 1:1 1-propanol: water, and 1:1 acetone:water. Which solvents work from best to worst in SN1 reactions and why?
25ml of a 0.388M solution of sodium sulphate is mixed with 35.3 ml of 0.229M sodium sulphate .what is the molarity of the resulting solution? Assume the volume are additive
Using Hess's Law and any necessary information from your Data Booklet, calculate
combustion of ethene Using Hess's Law and any necessary information from your Data Booklet, calculate the molar enthalpy of reaction for the combustion of ethene in kJ/mol. C2H4+ 3O2 ---> 2CO2 + 2H2O
2 grams of sugar (solubility = 4.20 g/mL water at 90°C) was added to a travel mug of coffee (500 mL) and half the sugar dissolved with stirring in 100 secs. The sugar had a surface area of 6 x 10^(-3)m^2(approx 1mm^3 grains). Calculate the dissolution rate constant for the sugar assuming steady state conditions.
1. What is the product of the original reaction as shown? 2. If Br is replaced with Cl, what would be the product? 3. If Br is replaced with I, what would be the product? (Three total answers)
How does the rate of an E2 Elimination reaction affected by the ff. conditions?
Conditions: 1. Reactant Structure: bromocyclohexane, chlorocyclohexane, iodocyclohexane 2. Base Strengths: 1.0 mL sodium ethoxide diluted with 1.0 mL ethanol as opposed to the original which is 2.0 mL sodium ethoxide 3. Temperature: reflux vs room temperature. *Please provide specific explanations (even a 3 year old will understand) on how each factors affect the
Comparing Methane and Butane as Camp Stove Fuels Provide all the relevant balanced chemical reactions that you need to use in order to compare the two fuels from an energy stand point Provide all the relevant calculations needed to determine which of the two fuels is best from an energy point of view
I have the balanced chemical equations but I'm not sure
Fluorescence Spectroscopy (i) Fluorescence resonance energy transfer (FRET) is widely used in biology as a molecular ruler (i.e. to estimate distances between two fluorescent molecules). A FRET donor-acceptor pair had a Förster distance of 7.2 nm. If the efficiency of energy transfer between the donor and acceptor was 10%, what is the distance between the donor and acceptor?
(a) A chemist is given three bottles, each containing a pure sample of one of the three complexes, Na3[Co(CN)6], Na3[-Fe(C2O4)3] or Na3[CoF6] (C2O4 represents the bidentate, dianionic oxalato ligand). However, the bottles are not labelled and the chemist is asked to quickly determine which bottle contains which complex by carrying out for each sample measurements involving: (
(b) When inspecting the structures of the metal-metal bonded complex ions [Mo2Cl8]4-, [Re2Cl8]2-, and [Os2Cl8]2-, it is observed that the chlorido ligands on the metal centres have an eclipsed arrangement in [Mo2Cl8]4- and [Re2Cl8]2-, but they are staggered in [Os2Cl8]2-. (i) Draw a molecular orbital energy level diagram (obtained by overlap of the appropriate d-orbitals)
Suppose you were required to make a solution by diluting 15.0 mL of an aqueous solution to a final volume of 500 mL. (4 pts.) Describe, in as much detail as possible, the entire dilution process from beginning to end as described in this lab. How are the two solutions properly mixed together? What is the role of the meniscus in this process?
we know that 0.89% saline (NaCl) solution is isotonic with blood .In real-life emergency, you run out of physiological saline solution and have only KCL as a salt and distilled water . would it be acceptable to make a 0.89% aqueous KCL solution and use it for intravenous infusion ? explain
The concentration of hydronium ions, i.e. (H3O+), in a solution is measured
The concentration of hydronium ions, i.e. (H3O+), in a solution is measured to be 8.6x10^-9 mol/L. What is the pH of the solution? Is this solution an acid or a base?
These are questions for a pre-lab and I do not understand how to do these at all. I talked to the teacher and he only gave me the definitions and told me to think about what it is asking for. Thanks for the help!!!
1. Ozone absorbs ultraviolet light in the upper atmosphere thus protecting us from sunburn. Down at ground level however, ozone is a pollutant whic
Calculate the molar enthalpy change of neutralisation of potassium carbonate. Assume that all ...
When 2.76g of potassium carbonate were added to 30.0cm^3 of 2.0mol/dm^3 hydrochloric acid, the temperature rose to 5.2°C. Write the equation for this reaction. Calculate the molar enthalpy change of neutralisation of potassium carbonate. Assume that all solutions have a density of 1.0g/cm^3
If the Constitution was written today, given what we now know about science and technology, particularly chemistry (and even more specifically biochemistry and molecular biology), what do you think it would include/not include, and why? How would it be different? Would there be a rewording based on what we know now? If so, how and wherein? There are lots of things to think a
For the reaction of carbon dioxide to form carbon monoxide and oxygen, ΔH is 570
For the reaction of carbon dioxide to form carbon monoxide and oxygen, ΔH is 570 kJ. How many grams of CO2 will react if 450 kJ is absorbed: 2CO2 (g) → 2CO (g) + O2 (g) ΔH= +570 kJ
Calculate the energy lost by photons Compton scattered at 45°, 90° and 135° for incident photons of energies 5?
Calculate the energy lost by photons Compton scattered at 45°, 90° and 135° for incident photons of energies 50 keV and 100 keV. What fraction of the photon's energy is lost in each case? Present your results in a table. What conclusions can you make about the effect of photon energy on the fraction of energy lost?
Calculating the Potential of Solution, this makes me sick!!?
You are titrating 50.00mL of solution containing 0.100mol/L Co2+ with 0.100 mol/L Ce4+ titrant at 25 degree celcius. Eo Ce4+, Ce3+ = 1.44 V --------------------------- Eo Co3+, Co2+ = 0.855V
Calculate the potential of the solution after the addition of i) 25.00mL ii) 50.00mL iii) 75.00mL of the titrant Assume unit activity coefficients for all species.
Scientists make nanofibers using fridge magnet and ferrofluid
Researches from the University of Georgia, Princeton University and Oxford University report a new method for nanofiber production using a permanent magnet and ferrofluid – magnetospinning. Results of this research are published in Advanced Materials journal - onlinelibrary.wiley.com/doi/10.1002/adma.201500374/abstract
A ferrofluid is a colloidal dispersion of stabilized