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2 answers:
Answer : The correct option is (D) Centimeters per minute
Explanation :
Speed : It is defined as the distance traveled by the object per unit time.
The unit of distance are, kilometer, meter, centimeter etc.
The unit of time are, minute, second, hour etc.
Formula used :
From the given options, the correct measurement of speed is centimeters per minute.
Hence, the correct option is (D) Centimeters per minute
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For a voltaic cell consisting of chromium, an electrode dipped in a 1.20 M chromium (III) nitrate solution and a tin electrode dipped in a 0.400 M tin (II) nitrate solution, the cell potential at 298 K is mathematically given as
Ecell = 0.577 V
<h3 /><h3>What is the cell potential at 298 K?</h3>Generally, the equation for the Oxidation and Reduction is mathematically given as
Cr(s) ------------------ Cr+3(aq) + 3e- ] x 2 ...O
Sn+2(aq) + 2e- ------------ Sn(s) ] x 3 ...R
Reaction
2 Cr(s) + 3 Sn+2(aq) --------------- 2 Cr+3(aq) + 3 Sn(s)
Therefore
Eicell = - 0.14 - ( - 0.74)
Eicell = 0.60
In conclusion
Ecell = 0.577 V
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