Mass of sodium-24 sample that remains after 1 day and 6 hours has to be calculated if the half life of sodium-24 is 15 hours. Concept Introduction: For a radioactive isotope, the relative instability is expressed in terms of half-life. Half-life is the time required for half of the given quantity of the radioisotope to undergo radioactive decay. Half-life of the radioactive isotope is independent of the quantity of the radioactive isotope. Half-life of a radioactive isotope can be expressed as, t 1 / 2 = 0 .693 k

Question

Using the Nernst equation to calculate nonstandard cell voltage A galvanic cell at a temperature of 25.0 °C is powered by the following redox reaction: MnO2 (s)+4H* (aq)+2Cr²+ (aq) → Mn²+ (aq)+2H₂O (1)+2Cr³+ (aq) + 2+ 2+ 3+ Suppose the cell is prepared with 7.44 M H* and 0.485 M Cr²+ in one half-cell and 7.92 M Mn² and 3.73 M Cr³+ in the other. Calculate the cell voltage under these conditions. Round your answer to 3 significant digits. ☐ x10 μ Х 5 ? 000 日。

Answer 1

Question

Chapter 18, Problem 28QRT

Interpretation Introduction

Interpretation:

Mass of sodium-24 sample that remains after 1 day and 6 hours has to be calculated if the half life of sodium-24 is 15 hours.

Concept Introduction:

For a radioactive isotope, the relative instability is expressed in terms of half-life. Half-life is the time required for half of the given quantity of the radioisotope to undergo radioactive decay. Half-life of the radioactive isotope is independent of the quantity of the radioactive isotope. Half-life of a radioactive isotope can be expressed as,

t1/2 = 0.693k

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