1. Chemistry

    A solution of H2SO4 was electrolyzed using the inert platinum electrodes. A) Write the balanced half-reactions for the anode and cathode in this cell. B) How many coulombs passed through the cell in 90 minutes at 8.0 amperes? C) How many moles of electrons

    asked by Melanie on January 6, 2013
  2. English

    Can you let me know if the sentences below are grammatically correct? Thank you very much! 1) She is wearing a long-sleeved cotton polo shirt with a slogan in the front and one in the back. 2)She's got a pony tail and a patterned hair-band over her head.

    asked by Franco on April 27, 2010
  3. chemistry 2

    A voltaic cell is constructed with an Ag/Ag+ half-cell and a Pb/Pb2+ half-cell. Measurement shows that thesilver electrode is positive. -Write balanced half-reactions and the overall spontaneous reaction.

    asked by anonymous on April 28, 2012
  4. Chemistry

    I'm having a difficult time with the Conversion Units in my equation. Attempting to answer this question: My cell phone has an antenna about 10.00cm long. If this is one quarter of the wavelength of the radiation, at what frequency in Megahertz does it

    asked by Frank on February 27, 2012
  5. Chemistry!

    A Galvanic cell runs on the following reaction: Co (s) + Cu2+ (aq) → Co2+ (aq) + Cu (s) Draw a diagram for this Galvanic cell, labeling the electron flow, the anode and cathode, and the positive and negative sides of the Galvanic cell.

    asked by Abby on July 1, 2011
  6. biochemistry

    please explain how to get these answers (answers provided): 1. If this cell were a muscle cell (myocyte), how many molecules of actin could it hold? (Assume the cell is spherical and no other cellular components are present; actin molecules are spherical,

    asked by stew on January 17, 2008
  7. Chemistry DR BOB

    Under standard conditions of 1 atm and 298.15K, the half-cell reduction potential E,zero for the anode in a voltaic cell is 0.37V. The half-cell reduction potential E,zero for the cathode of the cell is 0.67V. The number of moles, n, of electrons

    asked by Brooke on March 16, 2016
  8. Chemistry

    A galvanic cell is constructed with a silver-silver chloride electrode, and a nickel strip immersed in a beaker containing 7.44 x 10-2 M solution of NiCl2. Determine the balanced cell reaction and calculate the potential of the cell. Enter in volts.

    asked by Kayla on May 2, 2012
  9. Chemistry

    A voltaic cell utilizes the following reaction: 2Fe3+(aq)+H2(g)→2Fe2+(aq)+2H+(aq). What is the emf for this cell when [Fe3+]= 3.70M , PH2= 0.95atm , [Fe2+]= 7.0×10−4M , and the pH in both compartments is 4.05? Express your answer using two significant

    asked by Rebecca on April 15, 2014
  10. human anatomy and physiology

    cells are the basic unit of life based on the original cell theory. name and define the function of at least nine organelles of animal cells. You will find a list of 14 cell organelles and their functions (what they do) at:

    asked by Kristen on August 23, 2005
  11. Physics

    A machine part is made from a uniform solid disk of radius R and mass M. A hole of radius R/2 is drilled into the disk, with the center of the hole at a distance R/2 from the center of the disk (the diameter of the hole spans from the center of the disk to

    asked by mymi on October 25, 2011
  12. chemistry

    1)The element nickel has ccp packing with a face-centered cubic unit cell. The density of nickel is 8900 kg/m3 and the cell volume is 4.376 x 10-23 cm3. Calculate the value of Avogadro's number to three significant figures based on these data. (Note: the

    asked by blasting on February 4, 2010
  13. Math

    The figure below represents a garden in which a flower bed ( inner rectangle) is to be installed. The garden ( excluding the flower bed) is to be sodded. The outer is 9' ft width and 15' ft long and the inner is 3'ft wide and 7'ft long. A) Find the area of

    asked by Jen on April 14, 2015
  14. Psychology

    In a neuron, the myelin sheath serves to insulte

    asked by Peterson on December 10, 2012
  15. General

    I do not know what subject to put this uh ok how do I put this into one cell into microsoft excell into one cell - .49 m when i put "-" it thinks I'm entering a formula which is not what I'm tyring to do i want negetive .49 m m being meters into one cell

    asked by Kim on May 30, 2009
  16. Physic

    A machine part is made from a uniform solid disk of radius R = 0.161 m and mass M = 7.75 kg. A hole of radius R/2 is drilled into the disk, with the center of the hole at a distance R/2 from the center of the disk (the diameter of the hole spans from the

    asked by jean on November 28, 2011
  17. 7th grade science Ms. Sue please only 5 questions

    11. Which of these is selectively permeable? (1 point) door window screen wall mirror 12. The process that releases energy without using oxygen is ____. (1 point) photosynthesis respiration osmosis fermentation 13. The chromosomes in the nucleus of a cell

    asked by Delilah on December 6, 2012
  18. Algebra

    A machining company manufactures washers. The dimensions of the washer are 2cm for the inner circle and 4cm for the outer circle. And the inner and outer radii is positive and negative 2. The range of acceptable values is called the tolerance. A. Write

    asked by Mary B. on September 9, 2018
  19. chemistry- electrochemical cell

    What makes this an oxidation-reaction? 3Ag2S+2Al(s) -> Al2S3+6 Ag(s)? Write the half-reactions showing the oxidation and reduction reactions. Identify which is the oxidation reaction and which is the reduction reason. What is oxidized in the reaction? What

    asked by princess on March 25, 2012
  20. Biology!!

    If i do a starch test on a plant cell that comes from a plant exposed to sunlight, which parts of the plant cell will be stained blueblack? 1. nucleus 2. cell wall 3. cytoplasm 4. vacuole I wrote the answer as 4, the vacuole, but the correct answer says 3,

    asked by Marrion on October 13, 2009
  21. Science

    Plant Cell Analogy Cell Membrane: Security Nucleus: Boss Mitochondira: Food court Cytoplasm: Chromosomes: Vacuole: Water Ribosomes: Food Cell wall: Endoplasmic Reticulum: Chloroplasts: Golgi Appartuas: Packer What could the others be?

    asked by Anonymous on April 21, 2014
  22. Science

    Plant Cell Analogy Cell Membrane: Security Nucleus: Boss Mitochondria: Food court Cytoplasm: Chromosomes: Vacuole: Water Ribosomes: Food Cell wall: Endoplasmic Reticulum: Chloroplasts: Golgi Appartuas: Packer What could the others be?

    asked by Anonymous on April 21, 2014
  23. nucleus true facts

    is the nucleus always found in the center of the cell? I know the nucleolus is located inside the center of the nucleus but is the nucleus alwasy found in the center of the cell? Short answere is no. The cell nucleus does not have to be in the exact center

    asked by jamal on October 4, 2006
  24. Calculus II

    Suppose a cell of volume V cc is surrounded by a homogeneous chemical solution of concentration C g/cc. Let y denote the concentration of the solute inside the cell at any time t and suppose that, initially, the concentration is y0. Fick's law, named after

    asked by Catherine on October 7, 2017
  25. PLease help!(Math)

    2sqrt24a^3b^2*5sqrt6ab I'm guessing that the first sqrt sign is over 24a^3b^2 and the second sign is over 6ab? If that is correct, you can first break down the first part and ignore the 2. By observing the factors of 24, we see that 4*6=24. Since the sqare

    asked by Margie...(HappyNewYearEveryone) on January 2, 2007
  26. Chemistry

    The part of an electrochemical cell that carries electrons to a reacting ion is a(n) (1) cathode (2) anode (3) electrode (4) electrolyte

    asked by Brian on April 22, 2014
  27. math

    In each part, give a value that fits each description. a. 2 1/3 times as long as 24 cm b. 75% as long as 24cm

    asked by Anonymous on March 3, 2010
  28. Chemistry

    A voltaic cell consists of a Pb /Pb^2+ half-cell and a Cu/Cu^2 half-cell at 298K. The initial concentrations of Pb^2+ and Cu^2 are 5.20×10−2 M and 1.40 M, respectively.

    asked by Emma on April 28, 2010
  29. Biology!!

    Would a cell make enzymes for other cells? For example, would a cell make a lysosomal enzyme and send it to a different cell?

    asked by Andrea on October 22, 2008
  30. Math

    Impulses in nerve fibers travel at a speed of 293 ft./sec . the distance D traveled in T seconds is given by D =293t . how long would it take an impulse to travel from the brain to the toes of a person who is 6 feet tall? My answer: 6ft=293t 6/293=0.020477

    asked by Kim on February 3, 2016
  31. chemistry

    1. If half cell A has a standard reduction potential of E= -1.10 V and half cell B has a standard reduction potential of E= 0.65 V, which half-cell is the anode? 2. Which half cell has the higher potential energy? 3. Calculate Ecell for this voltaic cell.

    asked by greentree on July 15, 2012
  32. Psychology/Science

    Ms.Sue you helped me with the pictures of neurons yesterday. Thank you, I finally found some really good ones for my power point presentation. My assignment is to create a lesson plan for a sixth grade science class explaining what a neuron is and how it

    asked by Christian on October 18, 2007
  33. math

    Ted made a scale model of a submarine for his science class. a. What is the volume of Ted’s model? b. If 1 inch in the model represents 20 feet in the actual submarine, what is the volume of the actual submarine? front round is 3 inch radius/length 3

    asked by Lia on February 26, 2013
  34. physics

    For the following vector addition diagrams, use Pythagorean Theorem to determine the magnitude of the resultant. Use SOH CAH TOA to determine the direction. Use the tail end relative to due east. ^ I 4 m I ------>I 3 m I've got the Pythagoren Theorem and

    asked by Robyn on October 9, 2009
  35. Science* Please Help Me !

    How would cell division help heal a broken bone? Why do cuts and disappear when in the process of cell division? What is the main purpose for cell division?

    asked by Kate on December 20, 2012
  36. algebra

    Synthesis: Find a polynomial for the shaded area of each figure. 21t+8 is on top of the outer box and 4t is on the left side of the outer box. On the inter box there is 3t-4 and 2t on the left side of the inter box. the area between the outer box and the

    asked by Ann on July 18, 2012
  37. Biology

    In females the first meiotic cell division produces______cells. One of the cell is _____ than the other and is called the ______. The Polar body stays attached to the _______. The larger cell is called the _______amd ot ,atires omtp tje _______. The second

    asked by Carol on January 24, 2008
  38. science plz check

    Describe the outer planets. The outer planets, unlike the inner planets, are much larger and made up of gases. They have many moons, and larger rings of ice that go around the entire planet.

    asked by swimmerGirl on March 2, 2017
  39. childcare

    Writeacher: The correct word is Neuron not Beuron. My apologies.

    asked by action on August 15, 2010
  40. Bioscience

    Explain the role of exocytosis in the communication between a neuron and synapse

    asked by UniS06 on April 4, 2012
  41. college

    A standard voltaic cell is constructed so that the overall cell reaction is 2Al+3(aq) + 3M(s) --> 3M+2(aq) + 2Al(s) where M is an unknown metal. If ∆G⁰= -411 kJ for the overall cell reaction, identify the metal used to construct the standard cell.

    asked by Stephanie on April 28, 2010
  42. ion concentration

    Which of the following is responsible for maintaining the difference in ion concentration across the membrane of a nerve cell? here are choices the sodium-potassium pump the action potential the depolarization of the membrane the ion channels in the

    asked by alyssa on November 26, 2006
  43. Chemistry

    Write the equations describing the electrode reactions and the net cell reaction for this electrochemical cell containing tin and silver: Sn(s)|Sn2 (aq)||Ag (aq)|Ag(s) what is the equation for cathode, anode, and net cell reaction

    asked by Katie on February 27, 2012
  44. Chemistry

    Write the equations describing the electrode reactions and the net cell reaction for this electrochemical cell containing tin and silver: Sn(s)|Sn2 (aq)||Ag (aq)|Ag(s) what is the equation for cathode, anode, and net cell reaction

    asked by Katie on February 27, 2012
  45. Chemistry

    Using the half reaction potentials calculate the E^o cell for the Ni-Al cell. Ni (aq) + 2e- Ni (s) -0.25v Al3+ (aq) + 3e- Al (s) -1.66v Using that answer determine Ecell for Ni-Al cell when the concentration of Al3+ is 4.00M and the concentration of Ni2+

    asked by Maura on April 25, 2012
  46. Algebra

    he spreadsheet shows the length of 3 movies in each of 3 categories. Choose the formula that could be used in cell B2.   A B C D E 1 Type of Movie Movie 1 (min. long) Movie 2 (min. long) Movie 3 (min. long) Mean Length 2 Animated 72 63 84 73 3 Drama 92

    asked by Algebra on October 15, 2012
  47. Biology

    1. Creates energy in the form of ATP 2. The gel-like liquid that fills the cell 3. Sorts, packages, and sends out proteins 4. Helps the chromosomes divide faster in animal cells only 5. Creates food energy from sunlight energy 6. Responsible for digestion

    asked by Aradia Megido on October 6, 2012
  48. Chem Check Please!!!

    A voltaic cell is constructed that uses the following reaction and operates at 298 K: 2 Al(s) + 3 Mn2+(aq) 2 Al3+(aq) + 3 Mn(s). What is the potential, E, of this cell when [Mn2+] = 0.10 M and [Al3+] = 1.5 M? Answer: The EMF of this cell under standard

    asked by Matt on March 20, 2014
  49. Chemistry

    Pt(s)| Fe^3+ (aq, .1M), Fe^2+ (aq, 1M)|| Fe^3+ (aq, ?M), Fe^2+ (aq, .001M)| Pt(s) A.) Write anode reaction B.) Write cathode reaction D.) If E= .14V for this cell, calculate conc. of Fe^3+ on the right half of the cell E.) What is the max amount of work

    asked by lawerence on May 5, 2015
  50. English Expression

    Have you got your health checked? We have to go the hospital to get your medical certificate. After the 5th period, let's go out. He doesn't seem to have classes after 5th period(class). As I don't have classes as well, we can go out to do several things.

    asked by John on April 18, 2008
  51. Physics

    1.A spherical condenser has inner and outer spheres of radii a and b respectively. The space between the two is filled air. The difference between the capacities of the two condensers formed when outer sphere is earthed and when inner sphere is earthed

    asked by Sandhya on February 2, 2010
  52. science

    I have two questions I need help with please. Thank you! 1)Mitochondria, the energy-processing organelles in eukaryotic cells, have their own DNA, separate from that of the cell’s nucleus. Which of the following choices best explains the presence of

    asked by Jon on September 18, 2011
  53. physics

    A)A model rocket is launched straight upward with an initial speed of 47.7 m/s. It accelerates with a constant upward acceleration of 2.02 m/s2 until its engines stop at an altitude of 157 m. What is the maximum height reached by the rocket? B)How long

    asked by Justin on January 25, 2014
  54. Science

    1. Which of these statements is TRUE? A.The nucleus gives the cell its shape. B. Chloroplasts make food for animal cells. C. Animal cells have many different shapes. D. A plant cell can become a blood cell. C

    asked by Hayden on February 28, 2014
  55. Chemistry

    A galvanic cell is composed of these two half-cells, with the standard reduction potentials shown: Cu2+(aq) + 2 e- ---->Cu(s) +0.34volt Cd2+(aq) + 2 e- ---->Cd(s) -0.40volt What is the standard free energy change for the cell reaction of this galvanic

    asked by Zayn on April 16, 2015
  56. character traits (further questions)

    How can I explain the phrases: outer traits and inner traits to a group of 2nd graders? They are doing a character study and they need to focus on the inner and outer traits of the main character.

    asked by LISA on September 17, 2008
  57. Chemistry

    A chemist wishes to determine the concentration of CrO4-2 ions electrochemically. A cell is constructed consisting of saturated calomel electrode (SCE) and a silver wire coated with Ag2CrO4. The SCE is composed of mercury in contact with a saturated

    asked by jake on May 28, 2008
  58. college chem

    A student constructs a galvanic cell that has a strip of iron metal immersed in a solution of 0.1M Fe(NO3)2 as one half-cell and a strip of zinc metal immersed in a solution of 0.1M Zn(NO3)2 as the other half-cell. The measured cell potential is less than

    asked by sam on November 20, 2014
  59. Chemistry

    A student constructs a galvanic cell that has a strip of lead metal immersed in a solution of 0.1M Pb(NO3)2 as one half-cell and a strip of zinc metal immersed in a solution of 0.1M Zn(NO3)2 as the other half-cell. The measured cell potential is less than

    asked by Mel on March 30, 2010
  60. Plant Physiology

    Hey i have a mid term today at 3 , and this one sample question my prof posted online. If someone can please show me how to get the answers i would really appreciate it: A plant cell is found to have a Ψs = - 0.7 MPa and a Ψp = 0.5 MPa. Is this cell

    asked by Saira on February 13, 2009
  61. chemistry

    The electrochemical cell described by the cell notation has a standard emf (electromotive force) of -0.68 V. Calculate the value (kJ) for the standard free energy change of the cell. Round your answer to 3 significant figures. Pt(s) l MnO2(s) l MnO4-(aq),

    asked by me on June 6, 2010
  62. Science 4th grade

    1. The cell --------surrounds the cell parts. 2. The cell --------- gives plants cells their shape. 3. --------- are structures that release energy from food. 4.----------are structures that store food, water, or wastes. ANSWERS 1. membrane 2. wall 3.

    asked by LaNoria on September 9, 2008
  63. Science 4th grade

    1. The cell------------ surrounds the cell parts. 2. The process of cell division is called --------------. 3. -------------are structures that release energy food. 4. --------------- are structures that stores food, water or wastes. ANSWERS. 1.wall

    asked by LaNoria on September 8, 2008
  64. Chemistry

    A voltaic cell utilizes the following reaction and operates at 298K 3Ce{4+}(aq)+Cr(s)--->3Ce{3+}(aq)+Cr{3+}(aq) {}=Charge What is the EMF of this cell under standard conditions? What is emf of cell when [Ce{4+}]=2.1M, [Ce{3+}]=.13M, and [Cr{3+}]=2.0*10^-2

    asked by Ethan on April 15, 2012
  65. Chemistry

    A voltaic cell utilizes the following reaction and operates at 298K 3Ce{4+}(aq)+Cr(s)--->3Ce{3+}(aq)+Cr{3+}(aq) {}=Charge What is the EMF of this cell under standard conditions? What is emf of cell when [Ce{4+}]=2.1M, [Ce{3+}]=.13M, and [Cr{3+}]=2.0*10^-2

    asked by Ethan on April 16, 2012
  66. Chem. help please

    A zinc-copper battery is constructed as follows at 25 degree C: Zn | Zn2+(0.15 M) || Cu2+(1.70 M) | Cu The mass of each electrode is 250. g. I found the cell potential to be 1.13V and the cell potential after 5.00 A of current has flowed for 8.00 h is

    asked by Puja on March 10, 2012
  67. English

    How are they alike? --------------------------------------- Elephant's side and a wall. Elephants knee and a tree. Elephant's ear and a fan. Elephants tail and a rope. --------------------------------------- Need help figuring out how they are alike. I got

    asked by Larry on January 13, 2009
  68. Computer Science

    w w w (dot)cs(dot)umass(dot)edu(slash)~verts(slash)coins105(slash)quizzes(slash)images(slash)hw10(dot)gif Using the constants in cells A2:A9, create formulae for cells A12:A15 (surrounded by a dark line) to compute the corresponding "derived" physical

    asked by Andy on April 5, 2010
  69. physics

    A rocket in outer space with a velocity of 12,000 m/s. How long will it take to travel 3,000,000 meters?

    asked by Rose on December 7, 2011
  70. Biology

    In mitosis, if a cell has 4 chromosomes in prophase, how many chromosomes will this cell have in metaphase? a. 64 b. 32 c. 16 d. 8 e. 4 If a cell has 20 chromosomes in G1, how many chromatids will be present during prophase? a. 30 b. 20 c. 5 d. 40 Which of

    asked by Paul on October 21, 2013
  71. Biology

    Gabriela is sick with a bad cold. Her immune system is defending her body against the invading virus. The first line of defense is cells called macrophages, which attack viral particles. The cells eliminate viral particles in a process called endocytosis.

    asked by go commit not ok on November 14, 2018
  72. chemistry (electrochemistry)

    1) For the following electrochemical cell Cu(s)|Cu2 (aq, 0.0155 M)||Ag (aq, 1.50 M)|Ag(s) write the net cell equation. Calculate the following values using standard potentials as needed. Eo cell and dGo for each

    asked by Andrew on April 15, 2013
  73. Physics

    The diameters of the main rotor and tail rotor of a single-engine helicopter are 7.59 m and 0.98 m, respectively. The respective rotational speeds are 456 rev/min and 4143 rev/min. Calculate the speeds of the tips of both rotors. main rotor: tail rotor:

    asked by Anonymous on November 17, 2010
  74. biology

    What chemical fuel powers all cell activities? Since this is not my area of expertise, I searched Google under the key words "cell metabolism chemical" to get these possible sources: http://www.answers.com/topic/cell-metabolism I hope this helps. Thanks

    asked by Maddy on March 1, 2007
  75. Chemistry

    Crystal of Sodium form Cubic unit cell with edge length 430pm.Find the no.of atoms present per unit cell and also the type of unit cell. P.S. No radius or density is given so its a lil bit tough dan the rest... Plz Help ASAP !!

    asked by Minhye on January 28, 2016
  76. Biology

    Which of the following cells check for during the G2 check point? a. Growth hormone c. DNA integrity b. Nutritional status d. Cell size In mitosis, if a cell has 4 chromosomes in prophase, how many chromosomes will this cell have in metaphase? a. 64 b. 32

    asked by John on October 21, 2013
  77. Algebra

    Sabrinia is building a rectangular raised flower bed. The boards on the two shorter sides are 6 inches thick, and the boards on the two longer sides are 4 inches thick. Sabrina wants the outer length of her bed to be 4 times its height and the outer width

    asked by HayLEY on November 17, 2015
  78. math

    Tom used 5/8 yard of ribbon to tie weights on the tail of his kite. He cut the length of ribbon in equal pieces that were 1/12 yard long. How many pieces, each 1/12 yard long did Tom cut from the 5/8 yard ribbon?

    asked by Thomas on October 28, 2016
  79. Body Structure and Function

    Conductivity is the ability of a neuron to react to stimuli? True or False

    asked by RJ on May 19, 2011
  80. chemistry

    describe briefly how the particular structure of a neuron relates to it's function in the body

    asked by joan on September 8, 2008
  81. Chemistry

    3. The diagram shows an electrochemical cell with a gold strip (left) and aluminum glasses (right). In your response, do the following: • Label the cathode and the anode, including the charge on each. • Show the flow of electrons. • Describe what

    asked by kat on May 13, 2016
  82. Chemistry

    An electrochemical cell that uses the reaction Ti^3+ + 2Cr^2+ -> Ti^1+ + 2Cr^3+ Has a standard cell potential of E¢ªcell = +1.19V a. Write the two half-cell reactions. b. Labeling all parts and show the direction of flow of electrons. (Place the anode

    asked by Anna on April 15, 2011
  83. Science/Biology

    Pick the BEST answer: A)Which Of The Following Is An "Excitable Cell"? 1) Neuron 2) Electron 3) Hormone 4) Both 1 & 2 5) All Of The Above B)What Is The Popular Molecule That Energizes Many Activities In Cells? 1) Adenosine Triphosphate 2) Adenosine

    asked by Biomed on December 11, 2007
  84. Biology

    Pick the BEST answer: A)Which Of The Following Is An "Excitable Cell"? 1) Neuron 2) Electron 3) Hormone 4) Both 1 & 2 5) All Of The Above B)What Is The Popular Molecule That Energizes Many Activities In Cells? 1) Adenosine Triphosphate 2) Adenosine

    asked by Biomed on December 12, 2007
  85. chemistry

    The fuel cell of h2 + o2 --> 2h2o has a cell potential of 1.23 V... If The equation for Ecell = Cathode - Anode, why wouldn't the cell be -.43 because anode = oxidation and cathode = reduction, right?

    asked by EBB on April 28, 2016
  86. chemistry

    The fuel cell of h2 + o2 --> 2h2o has a cell potential of 1.23 V... If The equation for Ecell = Cathode - Anode, why wouldn't the cell be -.43 because anode = oxidation and cathode = reduction, right?

    asked by EBB on April 28, 2016
  87. Bio

    In order to maintain homeostasis, human cells must have a higher concentration of sodium ions outside the cell than inside the cell. In addition, the concentration of potassium ions must be higher inside the cell than outside the cell. Which of the

    asked by Wyatt on May 14, 2013
  88. statistics

    A CBS/New York Times poll found that 350 out of 757 adults said they would travel to outer space in their lifetime, given the chance. Estimate the true proportion of adults who would like to travel to outer space with 95% confidence level.

    asked by smrey on June 13, 2012
  89. Chemistry (Electrochemistry)

    The standard potential for the following galvanic cell is 1.72V : Be(s)|Be2+(aq)||Pb2+(aq)|Pb(s) The standard reduction potential for the Pb2+/Pb half-cell: E = -.13V Calculate the standard reduction potential for the Be2+/Be half-cell. What I know: Be is

    asked by Brian on December 5, 2014
  90. Chemistry/- Dr.Bob222

    A voltaic cell consists of a Zn/Zn2+ half-cell and a Ni/Ni2+ half-cell at 25 C. The initial concentrations of Ni2+ and Zn2+ are 1.50 M and 0.10 M, respectively. a. What is the initial cell potential? My answer: 0.56 B b. What is the cell potential when the

    asked by Nevaeh on June 3, 2016
  91. Biology

    . Which of the following is an appropriate description of the arrangement of the cell membrane? A. Fluid phospholipid bilayer containing embedded proteins B. Rigid carbohydrate bilayer containing embedded phospholipids C. Rigid layer of phospholipids with

    asked by dulce on July 13, 2014
  92. Science

    What is true of all body cells except sex cells? A) Each cell type carries chromosomes and genes that identify it as that specific type of cell. For example, skin cells have different chromosomes and genes than muscle cells. B) Each body cell contains the

    asked by I am 13 on April 30, 2018
  93. science/planets

    Q: What two things does Earth have in common with the outer planets called gas giants? A: A)relative temperatures above freezing B)moons and magnetic field C)fairly long days and short nights D)volcanic activity and geysers

    asked by Nikoa on December 30, 2013
  94. chemistry

    The cell shown above is a concentration cell. Both cells contain a copper solution and have copper electrodes. The only driving force for this cell is the difference in the concentration of the copper solutions. The system will react to equalize the

    asked by bekah on May 5, 2014
  95. Math

    How do I solve this problem? : Four rectangle strips of wood, each 30 cm long and 3 cm wide, are arranged to form the outer section of a picture frame, as shown. Determine the area in side the wooden frame.

    asked by Gaby on March 5, 2014
  96. Calculus II

    I'm having trouble getting started. Steve said it's similar to another question I asked but I don't know how to begin. Any help? Suppose a cell of volume V cc is surrounded by a homogeneous chemical solution of concentration C g/cc. Let y denote the

    asked by Catherine on October 8, 2017
  97. Statistics

    Research Question for Parts 1 and 2: A health psychologist wants to study overall student health on a university campus. One measure he decides to take is that of minutes exercised per week. Assume that we know from previous studies that the population

    asked by Fredla on December 3, 2012
  98. chemistry

    A chemist wishes to determine the concentration of CrO4-2 ions electrochemically. A cell is constructed consisting of saturated calomel electrode (SCE) and a silver wire coated with Ag2CrO4. The SCE is composed of mercury in contact with a saturated

    asked by Tom on May 28, 2008
  99. Egg-speriment help

    I go to conventions academy for seventh grade. A week ago we were assigned to the egg-experiment where "One of the cell structures you will be learning about is the cell membrane. In the Chapter Project, you will model how a cell membrane works to let

    asked by Kira on November 2, 2017
  100. probability distribution

    A coin is biased such that a head is thrice as likely to occur as a tail. Find the probability distribution of heads and also find the mean and variance of the distribution when it is tossed 4 times. P(head) + P(tail) = 1 P(head) = 3 P(tail) Solving gives:

    asked by queen on January 18, 2007