Balance the following skeleton reaction, calculate e° cell , and state whether the reaction is spontaneous:
1. mn2+(aq) + co3+(aq) > mno2(s) + co2+(aq) [acidic]
2. co3+(aq) + e− > co2+(aq)
3. mno2(s) + 4h+(aq) + 2e− > mn2+(aq) + 2h2o(l)
4. mno4−(aq) + 2h2o(l) + 3e− > mno2(s) + 4oh−(aq)
5. 2mn2+(aq) + 2e− > mn(s)

Read the chemical equation. 2c2h2 + 5o2 → 4co2 + 2h2o which of the following statements would be correct if one mole of c2h2 was used in this reaction? one mole of oxygen was used in this reaction. five moles of oxygen were used in this reaction. four moles of carbon dioxide were produced from this reaction. two moles of carbon dioxide were produced from this reaction.

I'm learning about the periodic tables and what each subject's configuration is. for example, hydrogen is 1s^1, but i don't understand how you get that. can someone me understand how to figure out how to figure this out? sorry if the question makes no sense, but it would really a lot if you could me understand! you so much if you can!

Titration reveals that 11.6 ml of 3.0m sulfuric acid are required to neutralize the sodium hydroxide in 25.00ml of naoh solution. what is the molarity of the naoh solution?