Homework Answers
At equilibrium soil water potential is equal to cell water potential hence -1300 k pascal
Preasure potentail = soil water potential + solute water potentail + root cell water potential
= (-1300) + ( -1300) + (-212)
= -2812 kpas
UESTION 1 What would enhance water uptake by a plant cell? O decreasing the Ψ of...
UESTION 1 What would enhance water uptake by a plant cell? O decreasing the Ψ of the surrounding solution O increasing the pressure exerted by the cell wall ( the loss of solutes from the cell o increasing the Ψ of the cytoplasm O positive pressure on the surrounding solution QUESTION 2 The value for Ψ in root tissue was found to be- O be from the tissue into the sucrose solution O be from the sucrose solution into the...
A galvanic cell has an iron electrode in contact with 0.20 M FeSO4 and a copper...
A galvanic cell has an iron electrode in contact with 0.20 M FeSO4 and a copper electrode in contact with a CuSO4 solution. If the measured cell potential at 25 ∘C is 0.55 V , what is the concentration of Cu2+ in the CuSO4 solution? Express your answer using two significant figures.
A voltaic cell has an iron electrode in contact with 0.55 M FeSO4 and a copper...
A voltaic cell has an iron electrode in contact with 0.55 M FeSO4 and a copper electrode in contact with a CuSO4 solution. If the measured cell potential at 25ºC is 0.83 V, what is the concentration of Cu2+ in the CuSO4 solution? Enter your answer to the hundredths digit regardless of significant figures.
A galvanic cell has an iron electrode in contact with 0.12 M FeSO4 and a copper...
A galvanic cell has an iron electrode in contact with 0.12 M FeSO4 and a copper electrode in contact with a CuSO4 solution. PartA f the measured cell potential at 25 °C is 0.64 V, what is the concentration of Cu+ in the Cus04 solution? Express your answer using two significant figures. 2+ Submit Previous Answers Request Answer X Incorrect; Try Again; 5 attempts remaining
A galvanic cell has an iron electrode in contact with 0.19 MFeSO4 and a copper electrode...
A galvanic cell has an iron electrode in contact with 0.19 MFeSO4 and a copper electrode in contact with a CuSO4 solution. If the measured cell potential at 25 ∘C is 0.60 V, what is the concentration of Cu2+ in the CuSO4 solution? Express your answer using two significant figures.
Suppose that the root-mean-square velocity Us of water molecules (molecular mass is equal to 18.0 g/mol)...
Suppose that the root-mean-square velocity Us of water molecules (molecular mass is equal to 18.0 g/mol) in a flame is Feedback found to be 1170 m/s. What temperature does this represent? The root-mean-square velocity Urms of a molecule in a gas is related to 5.95 x109 temperature the mass of the molecule m and the temperature of the gas T. 3KT Urms The Boltzmann constant is k = 1.38 x 10-23 J/K.
1. List three potential sources of soil salinity. How can soil salinity be remedied in fields?...
1. List three potential sources of soil salinity. How can soil salinity be remedied in fields? 2. Based on growing degree day accumulation, which crop will be ready to harvest at the earliest date if both crops were planted on the same day? A. the crop with a base growth temperature of 60°F B. the crop with a base growth temperature of 40°F. C. base growth temperatures do not impact the rate at which crops reach harvest maturity 3. What at the benefits of no-till...
1. A voltaic cell is constructed that is based on the following reaction: Sn2+(aq)+Pb(s)→Sn(s)+Pb2+(aq). A. If...
1. A voltaic cell is constructed that is based on the following reaction: Sn2+(aq)+Pb(s)→Sn(s)+Pb2+(aq). A. If the concentration of Sn2+ in the cathode compartment is 1.30 M and the cell generates an emf of 0.25 V , what is the concentration of Pb2+ in the anode compartment? B. If the anode compartment contains [SO2−4]= 1.30 M in equilibrium with PbSO4(s), what is the Ksp of PbSO4? 2. A voltaic cell utilizes the following reaction: 2Fe3+(aq)+H2(g)→2Fe2+(aq)+2H+(aq). A. What is the emf...
Consider a galvanic cell where one compartment has Br2 (aq) at a concentration of 0.50 M and Br ̄ at a concentration of...
Consider a galvanic cell where one compartment has Br2 (aq) at a concentration of 0.50 M and Br ̄ at a concentration of 0.10 M with a platinum electrode and the second compartment has Cr3+ at a concentration of 0.20 M and a Cr electrode. Use the following reduction potentials to answer the questions: Cr3+ (aq) + e ̄→Cr(s) εo = - 0.73 V Br2(aq) + 2e ̄→2Br ̄ (aq) εo =1.09V a. What is the standard cell potential for...
Page 3 An electrochemical is prepared from a chromium metal electrode in contact solution of 0.500 M chromium (III)...
Page 3 An electrochemical is prepared from a chromium metal electrode in contact solution of 0.500 M chromium (III) nitrate and a standard hydrogen half-cell elect The two half cells are connected by a porous disk or a KCl salt bridge. Standard Reduction Potentials at 298 K Cr+ (aq) + 3e ----> Cr(s) Cr+ (aq) + e ----> Cr2+ (aq) E° = -0.740 V E° = -0.440 V a) Write the reaction for the cell and calculate the standard free...
UESTION 1 What would enhance water uptake by a plant cell? O decreasing the Ψ of the surrounding solution O increasing the pressure exerted by the cell wall ( the loss of solutes from the cell o increasing the Ψ of the cytoplasm O positive pressure on the surrounding solution QUESTION 2 The value for Ψ in root tissue was found to be- O be from the tissue into the sucrose solution O be from the sucrose solution into the...
A galvanic cell has an iron electrode in contact with 0.12 M FeSO4 and a copper electrode in contact with a CuSO4 solution. PartA f the measured cell potential at 25 °C is 0.64 V, what is the concentration of Cu+ in the Cus04 solution? Express your answer using two significant figures. 2+ Submit Previous Answers Request Answer X Incorrect; Try Again; 5 attempts remaining
Suppose that the root-mean-square velocity Us of water molecules (molecular mass is equal to 18.0 g/mol) in a flame is Feedback found to be 1170 m/s. What temperature does this represent? The root-mean-square velocity Urms of a molecule in a gas is related to 5.95 x109 temperature the mass of the molecule m and the temperature of the gas T. 3KT Urms The Boltzmann constant is k = 1.38 x 10-23 J/K.
Page 3 An electrochemical is prepared from a chromium metal electrode in contact solution of 0.500 M chromium (III) nitrate and a standard hydrogen half-cell elect The two half cells are connected by a porous disk or a KCl salt bridge. Standard Reduction Potentials at 298 K Cr+ (aq) + 3e ----> Cr(s) Cr+ (aq) + e ----> Cr2+ (aq) E° = -0.740 V E° = -0.440 V a) Write the reaction for the cell and calculate the standard free...
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