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Chemistry Questions
What is the difference in structure between a polyunsaturated fat and a trans fat? Please draw...
Calculate the pressure exerted by 10.5 moles of neon gas in a volume of 5.65 L...
Gases Color Energy (E, ev) Wavelength (λ, nm) 1/λ (1/nm) H2 Blue Green Orange Red 2.31...
The soft drink industry is a major consumer of both nutritive (sugars) and non-nutritive sweeteners. The...
How would you prepare 2 L of a CaCl2 solution with a concentration of 5mg/ml?
When 3.25 g of sodium hydroxide (NaOH) was dissolved in 150.00 g of water a value...
1.) How many grams of carbon are in 20.0 grams of CH4? a. 18.46g b. 8.00g...
A certain reaction has an activation energy of 50.49 kJ/mol. At what Kelvin temperature will the...
A. One mechanism of fragmentation is loss of a neutral radical by cleavage of a bond...
For the following reaction, 6.19 grams of hydrogen sulfide are mixed with excess oxygen gas. The...
1. why is toluene a stronger nucleophile than benzene? 2.why is phenol a stronger nucleophile than...
Describe two techniques that can be used to identify polymorph forms of a drug substance. When...
Why are actual isotopic mass is slightly less than mass number ?
The two naturally occurring isotopes of bromine are 81Br (80.916 amu, 49.31%) and 79Br (78.918 amu,...
How do you calculate the molar composition of acetaminophen using its H NMR spectra?
1.) A 25.9 mL sample of 0.339 M methylamine, CH3NH2, is titrated with 0.353 hydrochloric acid....
When 4.37 g of potassium bromide (KBr) is dissolved in 109 g of water in a...
A gas has a volume of 5.5 liters at 3.3 atm. To expand the volume to...
At 500 K the reaction PCl5(g) <----> PCl3(g) + Cl2(g) has Kp = 0.497. In an...
Given the following reactions, (1) 1/2 N2(g) + 1/2 O2(g) ⇌ NO(g) Kc = 4.8×10^−10 (2)...
Tetraphosphorous hexaoxide is formed by the reaction of phosphorous (P4) with oxygen gas. If the reaction...
Out of the four acids: A.) o-toluic acid B.) benzoic acid C.) salicylic acid D.) p-hydroxybenzoic...
How many moles of iron are there in each of the following? a.) 3.10 moles of...
Part C: Testing Aspirin Products: what is the purity compared to reference sample from each sample...
Consider a solution that contains 63.0% R isomer and 37.0% S isomer. If the observed specific...
What amount of heat energy , in joules , must be removed to condensed 13.4g of...
Be sure to answer all parts. Give the amino acid sequence of an octapeptide that contains...
Calculate the change in entropy that occurs in the system when 1.80 mol of acetone (C3H6O)...
When 27.8 g of acetylene reacts with hydrogen, 21.4 g of ethane is produced. What is...
Calculate the pH of a 3.6 ✕ 10−3 M solution of H2SO4. WebAssign will check your...
Seawater contains 411 ppm calcium (Ca2+). What is the molar concentration (i.e., molarity) of calcium in...
If 1.92 mL of a 0.335 M NaOH solution were required to completely neutralize an acid...
Label the following as weak, strong, or non-electrolyte: Explain your reasoning. A: AB > A+(aq) +...
For the Equilibrium System N2 (g) + O2 (g) === 2 NO (g) 1.) Write a...
What substance serves the same function in plants that glycogen does in animals?
Calculate the energy of a photon of electromagnetic radiation at each of the following wavelengths. 337.1...
a sample of gold is added to 45.2 mL of water in a graduate cylinder, causing...
If 0.245 mol of H2SO4(g) reacts with excess NH3(g) at 75°C for the following reaction, 2NH3(g)...
The metal iridium becomes superconducting at temperatures below .14 K Calculate the temperature at which iridium...
Explain which atomic orbitals combine and form the sp2 hybrid atomic orbitals to create the geometry...
For the reaction 2A(g) + B(s) ⇌ C(l) + 2D(g) at 700 °C, Kc = 0.00147....
what is the molarity of a solution when 2.25g NaF is dissovled in enough water to...
Write the molecular, complete ionic, and net ionic equations for the following. Make sure to properly...
What carbohydrate is held together by glycosidic bonds? Select all that apply. glucose sucrose galactose chitin ...
How many carbon atoms are present in 5.000 × 10−4 mol of carbon? Give your answer...
In the net ionic equation for a reaction between a strong acid and a strong base,...
Part A A calorimeter contains 34.0 mL of water at 12.5 ∘C . When 1.50 g...
A drug with concentration 0.83 M decomposes via acid-catalysed hydrolysis with a rate constant of 0.026...
Consider a solution formed by mixing 60.0 mL of 0.100 M H2SO4, 39.9 mL of 0.100...
show the calculation of the amount of heat involved if 35.6 g of H2S is reacted...
Find Ksp for a CaCl2 solution in which the Ca2+ concentration is found to be 0.125M.
A buffer solution was prepared by mixing 0.1M K2HPO2 and 0.1M KH2PO4 (pH 6.64) - calculate...
The reaction A- + H+ → P has a rate constant given by the empirical expression...
A sample of hydrate lost 22.7% of its original weight on being heated. Determine the number...
can i calculate lambda max for a benzene ring according to woodward rules ? thank you...
Select the best single answer. The water-gas shift reaction plays a central role in the chemical...
The following reaction was performed in a sealed vessel at 774 ∘C : H2(g)+I2(g)⇌2HI(g) Initially, only...
Which has the larger ionization energy? Sodium (Na), or potassium (K). Why? Which has the larger...
How many moles of ions are contained 8.77 moles of cobalt (III) sulfite?
Given an ethene, draw involved structures and write the mechanism when given reagent, IBr in dichloromethane...
Outline 3 different synthesises of 2-phenyl-1-propanol (Starting with benzene).
The normal boiling point of liquid methyl acetate is 331 K. Assuming that its molar heat...
(a) When the difference in pH across the membrane of a glass electrode at 25 °C...
A solution of sodium was prepared by dissolving 0.0309 g of NaCl in distilled deionized water...
How does adding water to antimony trichloride affect (shift) the equilibrium even though it doesn't show...
The aluminum in bauxite must be separated from its oxygen and hydrogen compounds and then further...
A 1.802 gram sample of unknown compound contains 0.721 grams of carbon, 0.121 grams of hydrogen...
A Gold-201 decays due to alpha emission. What would the expected outcome be? Why?
Two objects, A and B, both have the same mass but B has a larger volume....
Do the titration on Unknown 6 (results are a pH of 13.75 after titration) Give the:...
Determine the number of moles of each gas present in a mixture of CH4 and C2H6...
A selection of commercial fruit juices and fruit extracts were analysed for ascorbic acid content. A...
1a. A calorimeter contains 34.0 mL of water at 15.0 ∘C . When 2.40 g of...
5. Be sure to answer all parts. Calculate ΔG for the reaction H2O(l) ⇆ H+(aq) +...
An aqueous sucrose, C12H22O11, solution is prepared. At 25C the vapor pressure of the solution is...
Which of the following does not obey the octet (or duet) rule? A. CH2O B. CCl4...
If 200.0 grams of water boil and say it takes 10.04 kJ to boil 1.000 moles...
For the reaction: NH2OH(aq) + Cr(s) --> N2H4(aq) + Cr(OH)3(s), pH = 10.0 balance the reaction
Calculate the pI for this peptide. Gly Asp Lys Cys Glu His Met Table 1. Group...
what would you expect to observe if you performed the silver nitrate test on benzil and...
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