2,220 Answered Questions for the topic organic chemistry

Organic Chemistry Biology Chemistry

03/12/21

HELP! stoichiometry has gotten the best of me
Nitrogen dioxide gas and water are placed in a closed container and react to form an aqueous solutionof nitric acid and nitrogen monoxide gas under STP conditions. The following data table... more
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Organic Chemistry Chemistry Organic

03/12/21

calorie of the chips
Suppose you burn a 2.4 g sample of potato chips. You use the heat given off from that process to heat 34.3 g of water from 16.3 oC to 21.7 oC. What is the caloric value (in kcal/g) of the potato... more
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Organic Chemistry Chemistry Biochemistry

03/12/21

Equilibrium concentrations

The equilibrium constant, Kc, for the following reaction is 55.6 at 698 K.H2 (g) + I2 (g)  2 HI (g)Calculate the equilibrium concentrations of reactants and product when 0.333 moles... more
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Organic Chemistry Science Biology Physics

03/12/21

4. Plants heterozygous for a characteristic that determines petal colour were crossed (AB × AB)
The A allele represents a red phenotype, and the B allele represents a white phenotype. Work out the genotypic numbers if:a. This is an F1 cross. The results will be one AA to two AB to one BB. b.... more
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Organic Chemistry Chemistry

03/10/21

Calculate the standard enthalpy change for the following reaction.
CO(g) + Cl2(g)COCl2(g)
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Organic Chemistry Chemistry

03/10/21

Calculate the standard enthalpy change for the following reaction.

Using standard heats of formation, calculate the standard enthalpy change for the following reaction.Fe2O3(s) + 3H2(g)2Fe(s) + 3H2O(g)
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Organic Chemistry Chemistry

03/10/21

What is the specific heat of chromium calculated from her data?
In the laboratory a student finds that it takes 98.4 Joules to increase the temperature of 13.6 grams of solid chromium from 21.2 to 38.3 degrees Celsius.
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Organic Chemistry Chemistry Biochemistry

03/10/21

Equalibrium Concentrations

The equilibrium constant, Kc, for the following reaction is 1.80×10-4 at 298 K.NH4HS(s) NH3(g) + H2S(g)Calculate the equilibrium concentration of H2S when 0.390 moles of NH4HS(s) are introduced... more
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Organic Chemistry Chemistry Biochemistry

03/10/21

Equilibrium calculations
The equilibrium constant, Kc, for the following reaction is 83.3 at 500 K.PCl3(g) + Cl2(g) PCl5(g)Calculate the equilibrium concentrations of reactant and products when 0.282 moles... more
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Organic Chemistry Chemistry Biochemistry

03/10/21

Calculating K from Rearranged equations
The equilibrium constant, Kc, for the following reaction is 1.95×10-2 at 731 K.2HI(g) H2(g) + I2(g)Calculate Kc at this temperature for the following reaction:HI(g) 1/2H2(g) + 1/2I2(g)Kc = 
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Organic Chemistry Chemistry Biochemistry

03/10/21

Calculate K for Rearranged equations
The equilibrium constant, Kc, for the following reaction is 11.5 at 345 K.2CH2Cl2(g) CH4(g) + CCl4(g)Calculate Kc at this temperature for the following reaction:1/2CH4(g) + 1/2CCl4(g) CH2Cl2(g)Kc = 
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Organic Chemistry Chemistry Biochemistry

03/10/21

Manipulating K Expressions
Consider the reaction:C(s) + O2(g)CO2(g)Write the equilibrium constant for this reaction in terms of the equilibrium constants, Ka and Kb, for reactions a and b below: a.) C(s) + 1/2... more
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Organic Chemistry Chemistry

03/10/21

How much energy is required to raise the temperature of 12.4 grams of gaseous nitrogen from 20.1 °C to 39.2 °C ?
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Organic Chemistry Chemistry

03/10/21

What is the standard enthalpy change for the reaction?
(1) 2C(s) + 2H2(g)C2H4(g)...... ΔH° = 52.3 kJ(2) 2C(s) + 3H2(g)C2H6(g)......ΔH° = -84.7 kJ(3) C2H4(g) + H2(g)C2H6(g)......ΔH° = _kJ?
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Organic Chemistry Chemistry

03/10/21

What is the final temperature of the chromium?
A sample of solid chromium is heated with an electrical coil. If 72.1 Joules of energy are added to a 13.3 gram sample initially at 24.1°C
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Organic Chemistry

03/10/21

Nucleophilic Carbon Question
Would KCN and (CH3)2CuLi be considered structures that have a nucleophilic carbon in them?
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Organic Chemistry Chemistry

03/08/21

How do I calculate the inverse of the absolute temp and convert to (mK)-1?
Temperature: 296.05K, 297.05K, 298.05KHow do I find absolute temp? I converted from celsius to get my temp in kelvin, so is that absolute? And the inverse would just be 1/T, right? But how do I... more
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Organic Chemistry Chemistry Biochemistry

03/04/21

Calculate K from Equilibrium

The equilibrium constant, Kc, for the following reaction is 10.5 at 350K.2CH2Cl2(g) CH4(g) + CCl4(g)If an equilibrium mixture of the three gases in a 19.4 L container at 350K contains 0.372 mol... more
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Organic Chemistry Chemistry Biochemistry

03/04/21

Calculate K from Equilibrium

The equilibrium constant, Kc , for the following reaction is 7.00×10-5 at 673 K.NH4I(s) NH3(g) + HI(g)If an equilibrium mixture of the three compounds in a 6.70 L container at 673 K... more
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Organic Chemistry Chemistry

03/03/21

C-H bond homolytic cleavage?
Can someone explain why C-H bond would undergo homolytic cleavage and not heterolytic? I thought it would be heterolytic as Carbon and hydrogen are obviously not of the same species.
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Organic Chemistry Chemistry Physics Biochemistry

03/03/21

What kinetic energy, 𝐸k , must the electrons have in order to resolve a protein molecule
To resolve an object in an electron microscope, the wavelength of the electrons must be close to the diameter of the object. What kinetic energy ,𝐸k, must the electrons have in order to resolve a... more
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03/03/21

Maximum mass of an object
Assuming that the smallest measurable wavelength in an experiment is 0.430 fm, what is the maximum mass of an object traveling at 913 m⋅s−1 for which the de Broglie wavelength is observable?
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Organic Chemistry Chemistry

03/01/21

Naming & Writing Ionic Formulas
Directions: Click the link for digital dice. In the menu at the top of the website choose to use the pink and blue dice so they match the dice key below.. Roll the dice and using the key below... more
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Organic Chemistry Biochemistry Chemsitry

03/01/21

A sample of ethanol, C2H6O, has a mass of 21.50 g. Calculate the number of ethanol molecules in the sample.
Please Help I really indeed need help with this question!!! Like I got the number of moles of the ethanol being 0.46 but then I get confused from there.
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Organic Chemistry Chemistry

03/01/21

What is the enthalpy of vaporization?
A mixture has a boiling pt of 371.7K with a vapor pressure of 184.52mmhg at 249.55K. what is the enthalpy of vap in kJmol-1? What is the vap pressure going to be at 295k? Do I use... more
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