A certain half-reaction has a standard reduction potential E+0.95 V. An engineer proposes using this half-reaction at the cathode of a galvanic cell that must provide at least 1.20 V of electrical power. The cell will operate under standard conditions. Note for advanced students: assume the engineer requires this half-reaction to happen at the cathode of the cell. Is there a minimum standard reduction potential that the half-reaction used at the anode of this cell can have? O yes, there is a minimum. If so, check the "yes" box and calculate the minimum. Round your answer to 2 decimal places. If there is no lower limit, check the "no" bax no minimum Is there a maximum standard reduction potential that the half-reaction used at the anode of this cell can have? O yes, there is a maximum If so, check the "yes" box and calculate the maximum. Round your answer to 2 decimal places. If there is no upper limit, check the "no" box. O no meiomum By using the information in the ALEKS Data tab, write a balanced equation describing a half reaction that could be used at the anode of this cell Note: write the half reaction as it would actually occur at the anode. 0 G

1 1 J 1 MJ 1 m J Edlanation = 10 = 10 = 10 = 10 Check -1 3 J J J J by filling in the missing prefix μ X

This is AP Environmental Science

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a = -bcd In order to solve the equation above for d, you must multiply both sides of the equation by the same expression: ax = -bcd x x The resulting equation is: d =

5. Identify the following as a physical or chemical change: (a) water boils at 212 °F (b) applying an electric current to water causing the evolution of a gas (c) some metal statues obtain a green color after years of exposure to the atmosphere (d) evaporation of water from a saline solution leaves a solid salt residue

Real-World Chemistry 1. Suppose you wanted to ship bananas from Puerto Rico to New York and the time required for shipment was 8 days. Will you choose to ship ripe bananas or green bananas? Why? 2. You may have heard the saying "One bad apple will spoil the whole barrel." Based on the results of | your experiment, do you think the statement may be true? Why?

Consider the following operations on the number 8.83 x 10-². Without using a calculator, decide which would give a significantly smaller value than 8.83 x 10-2, which would give a significantly larger value, or which would give essentially the same value. 8.83 x 10-2 +3.23 x 105 (same 8.83 x 10-2-3.23 x 105 smaller 8.83 x 10 2 x 3.23 x 105 larger v 8.83 x 10-2/3.23 x 105 smaller

What is 302 x 4903

Calculate the electrostatic force of repulsion for two protons separated by 93.0 pm. The charge of a proton is q = 1.6 x 10-1⁹ C. Express your answer to two significant figures and include the appropriate units. Fel = μA 2.7.10 6 Submit N Previous Answers Request Answer ? X Incorrect; Try Again; 5 attempts remaining Use the equation Fel = K(Q₁ Q₂/d²) to find the electrostatic force between the two particles. Q₁ and Q2 are the charges on the particles (charge of a proton here), and d is the distance of separation. The constant is given in the introduction and has the units Nm²/C². This means that the distance must be converted from picometers to meters using the relation 1 pm = 1 × 10¯ m. -12