2,220 Answered Questions for the topic organic chemistry

Organic Chemistry Chemistry Biochemistry

07/23/20

18. NEED HELP FAST

Calculate the cell potential for the galvanic cell in which the given reaction occurs at 25 °C, given that  [Zn2+]=0.00100 M  and  [Au3+]=0.871 M . Standard reduction potentials can be found in... more
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Organic Chemistry Chemistry Biochemistry

07/23/20

17. NEED HELP FAST

The voltage generated by the zinc concentration cell described by the line notationZn(s) ∣ Zn2+(aq,0.100 M) ‖ Zn2+(aq,? M) ∣ Zn(s)is  19.0 mV  at  25 °C.  Calculate the concentration of... more
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Organic Chemistry Chemistry Biochemistry

07/23/20

16. NEED HELP FAST

Write the net cell equation for this electrochemical cell. Phases are optional. Do not include the concentrations.Cu(s)∣Cu2+(aq, 0.0155 M)‖Ag+(aq, 3.50 M)∣Ag(s)net cell equation:Calculate  𝐸∘cell... more
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Organic Chemistry Chemistry Biochemistry

07/23/20

19. NEED HELP FAST

For the aqueous reactiondihydroxyacetone phosphate↽−−⇀glyceraldehyde−3−phosphatethe standard change in Gibbs free energy is  Δ𝐺°′=7.53 kJ/mol . Calculate  Δ𝐺  for this reaction at  298... more
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Organic Chemistry Chemistry Biochemistry

07/23/20

18. NEED HELP FAST

At  25 ∘C , the equilibrium partial pressures for the reaction3A(g)+4B(g)↽−−⇀2C(g)+2D(g)were found to be  𝑃A=5.87  atm,  𝑃B=4.85  atm,  𝑃C=4.79  atm, and  𝑃D=4.93  atm.What is the standard change... more
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Organic Chemistry Chemistry Biochemistry

07/23/20

17. NEED HELP FAST

The decomposition of a generic diatomic element in its standard state is represented by the equation12X2(g)⟶X(g)Assume that the standard molar Gibbs energy of formation of X(g) is  5.77... more
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Organic Chemistry Chemistry

07/22/20

A certain substance has a heat of vaporization of 65.34 kJ/mol. At what Kelvin temperature will the vapor pressure be 4.00 times higher than it was at 299K?
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Organic Chemistry Chemistry

07/21/20

Silver metal has a density of 10.5 g/cm3. A solid sphere of silver has a mass of 0.285 g. What is the diameter of the silver piece, in mm?
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Organic Chemistry Chemistry

07/21/20

A sample of an iron chloride compound contained 69.97g of Fe and 111.11g of Cl ......
Suppose a second sample was found to contain 21.66g of Fe. Assuming the compound follows the law of definite proportions, then what mass of Cl would be present in this sample?
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Organic Chemistry Chemistry Biochemistry

07/20/20

8. NEED HELP FAST

For a particular redox reaction,  BrO−  is oxidized to  BrO−3  and  Cu2+  is reduced to  Cu+ . Complete and balance the equation for this reaction in basic solution. Phases are optional.balanced... more
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Organic Chemistry Chemistry Biochemistry

07/20/20

7. NEED HELP FAST

Complete and balance the reaction in acidic solution.equation:ZnS + NO_{3}^{-} -> Zn^{2+} + S + NO Which element is oxidized?Which element is reduced?Which species is the oxidizing agent?Which... more
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Organic Chemistry Chemistry Biochemistry

07/20/20

4. NEED HELP FAST

For the oxidation–reduction reaction equation2Na+S⟶Na2S indicate how many electrons are transferred in the formation of one formula unit of product.electrons:
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Organic Chemistry Chemistry Biochemistry

07/20/20

10. NEED HELP FAST

A  20.574  g sample of aqueous waste leaving a fertilizer manufacturer contains ammonia. The sample is diluted with  71.827  g of water. A  10.093  g aliquot of this solution is then titrated... more
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Organic Chemistry Chemistry Biochemistry

07/20/20

15. NEED HELP FAST

Given the informationA+B⟶2D Δ𝐻∘ =-677.5kJ Δ𝑆∘= 370.0 J/K C⟶D Δ𝐻∘ = 509.0kJ Δ𝑆∘=-243.0 J/K calculate  Δ𝐺∘  at 298 K for the reactionA+B⟶2C Δ𝐺∘=
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Organic Chemistry

07/18/20

Enolate vs Nucleophile Reaction
How do you know if a reaction will form an enolate or attack at the carbonyl carbon? For example, if I added -OCH2CH3, would this attack the carbon or take a hydrogen to form the enolate?
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Organic Chemistry Chemistry Biochemistry

07/16/20

9. NEED HELP FAST

An aqueous solution at  25 ∘C  is  7.53%  LiOH by mass and has a density of  1.091  g/mL.What is the pH?pH=
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Organic Chemistry Chemistry Biochemistry

07/16/20

13. NEED HELP FAST

Calculate the pH of a  0.123 M  solution of  NaNO2.  The ionization constant,  𝐾a,  for the acid,  HNO2,  is  4.60×10−4. pH=
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Organic Chemistry Chemistry Biochemistry

07/16/20

19. NEED HELP FAST

A volume of  500.0 mL  of  0.100 M   NaOH  is added to  535 mL  of  0.200 M  weak acid  (𝐾a=2.96×10−5).  What is the  pH  of the resulting buffer?HA(aq)+OH−(aq)⟶H2O(l)+A−(aq) pH=
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Organic Chemistry Chemistry Biochemistry

07/16/20

20. NEED HELP FAST

The  p𝐾a  of hypochlorous acid is  7.530 . A  52.0  mL solution of  0.145  M sodium hypochlorite ( NaOCl ) is titrated with  0.321  M  HCl .Calculate the pH of the solution after the addition... more
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Organic Chemistry Science Chemistry

07/15/20

Which of the following characteristics apply to PH3? 1) trigonal pyramidal molecular geometry 2) sp2 hybridized 3) polar bonds 4) nonpolar molecule
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Organic Chemistry Math Science Chemistry

07/15/20

In which of the following molecules does the carbon atom have sp hybridization: HCN, CH4, CO2, and CH2O?
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Organic Chemistry Chemistry Biochemistry

07/15/20

5. NEED HELP FAST!!!

The reactionC4H8(g)⟶2C2H4(g)has an activation energy of  262 kJ/mol.  At  600.0 K,  the rate constant,  𝑘,  is  6.1×10−8 s−1.  What is the value of the rate constant at  790.0 K?
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Organic Chemistry Chemistry Biochemistry

07/14/20

NEED HELP FAST!!!!

The reactionC4H8(g)⟶2C2H4(g) has an activation energy of  262 kJ/mol.  At  600.0 K,  the rate constant,  𝑘,  is  6.1×10−8 s−1.  What is the value of the rate constant at  790.0 K?
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Organic Chemistry Chemistry Biochemistry

07/13/20

NEED HELP FAST!!!!

The reaction C4H8(g)⟶2C2H4(g)has an activation energy of 262 kJ/mol. At 600.0 K, the rate constant, 𝑘, is 6.1×10−8 s−1. What is the value of the rate constant at 790.0 K?
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Organic Chemistry Chemistry

07/13/20

Find the molecular formula of each compound:
C6H7N 186.27 g/mol C2HCl 241.90 g/ mol C5H10NS2 593.11 g/ mol not sure what i'm doing wrong :(
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