A galvanic cell at a temperature of 25.0 °C is powered by the following redox reaction: 2Cr* (aq) +3Ca (s) → 2Cr (s) + 3 Ca²* (aq9) 2+ Suppose the cell is prepared with 2.86 M Cr³" in one half-cell and 6.35 M Ca“" in the other. Calculate the cell voltage under these conditions. Round your answer to 3 significant digits.

Problem 20.25 Part A Complete and balance the half-reaction in basic solution. O₂(g) → OH (aq) Express your answer as a chemical equation including phases. ΑΣΦ A chemical reaction does not occur for this question. Part B Submit Previous Answers Request Answer Complete and balance the half-reaction in basic solution. Mn²+ (aq) → MnO₂ (s) Express your answer as a chemical equation including phases. ? ΑΣΦ Part C Submit Request Answer A chemical reaction does not occur for this question. ? [ΑΣΦ Complete and balance the half-reaction in basic solution. 2 Cr(OH)2 (s) → CrO² (aq) Express your answer as a chemical equation including phases. wwwww. ?

The same cell was used to study 0.100 M NH4CI (ag), and the measured resistance was 28.50 ohms. Calculate the molar conductivity of NH4CI(aq) at this concentration!

A chemist designs a galvanic cell that uses these two half-reactions: MnO4(aq)+8H(aq) +5e Cl₂(g) +2e Write a balanced equation for the half-reaction that happens at the cathode. Write a balanced equation for the half-reaction that happens at the anode. Answer the following questions about this cell. Write a balanced equation for the overall reaction that powers the cell. Be sure the reaction is spontaneous as written. + Do you have enough information to calculate the cell voltage under standard conditions? half-reaction 0 0 Yes Mn²+ (aq) + 4H₂O(1) →Mn²+, 2 C1 (aq) No standard reduction potential Eº 'red = +1.51 V E=+1.359 V red ロ→ロ X 0x19 S

The oxidation half-reaction is: For the following electron-transfer reaction: 3F₂(g) + 2Cr(s) →→→ 6F (aq) + 2Cr³+ (aq) + The reduction half-reaction is: + Use the References to access important values if needed for this question. Submit Answer - Enter electrons as e. Use smallest possible integer coefficients. If a box is not needed, leave it blank. Retry Entire Group + + 4 more group attempts remaining Previous Next Save

What voltage would be associated with the electrolysis of CrF3(aq)? Round your answer to proper significant figures, and show - or +.

How many grams of silver can be plated onto an object in 16.28 minutes at 7.54 A of current? Ag+ (aq) +e → ► Ag(s) Your Answer: Answer units

Using standard reduction potentials from the ALEKS Data tab, calculate the standard reaction free energy for the following redox reaction. Round your answer to 3 significant digits. The final units should be in kj

727/variants/1189727/take/10/ 08 MULTIPLE CHOICE Question 12 ☆ □ In a zinc-copper cell, Z | Zn² () Zn || Cu + 2 2 (ag) || Cu + 2 (aq) | Cu(s), which electrode is positive? A Cu+2 B Cu(s) c Zn(s) D Zn +2

Using standard reduction potentials from the ALEKS Data tab, calculate the standard reaction free energy AG for the following redox reaction. Round your answer to 3 significant digits. 4Br (aq) +N2 (g)+4H₂O (1) → 2Bг2 (1)+N₂H4 (aq) +40H (aq) OkJ T x10 ×