What is the final, balanced equation that is formed by combining these two half reactions?
Cu—>Cu2+ + 2e-
NO3 + 2e + 2H+ —>N0; +H20
o Cu2+ + NO3 + 4e" + 2H*-—Cu + NO; +H20
o Cu + NO3 + 2H+ —>Cu2+ + NO3 + H20
2Cu + NO3 + 2H* —>2Cu2* + NO3 + H20
o Cu+ NO3 + 2H*—Cu2+ + NO3 + 2H20

Alculate the concentration of h3o⁺in a solution that contains 5.5 × 10-5m oh⁻at 25°c. identify the solution as acidic, basic, or neutral.a) 1.8 × 10-10m, basicb) 1.8 × 10-10m, acidicc) 5.5 × 10-10m, neutrald) 9.2 × 10-1m, acidice) 9.2 × 10-1m, basic

7. what temperature is need to just dissolve 50 g of nh4cl in 75 g of water? '

Balance and in which category does it fit in? single or double displacement or synthesis or decomposition? (a) k2 o → k + o2 (b) na + i2 → nai (c) cu(no3 )2 + naoh → cu(oh)2 + nano3 (d) kclo3 → kcl + o2 (e) ca(no3 )2 + hbr → cabr2 + hno3 (f) sn(oh)2 → sno + h2 o (g) p4 + n2 o → p4 o6 + n2 (h) fe + al2 (so4 )3 → feso4 + al (i) alcl3 + na2 co3 → al2 (co3 )3 + nacl (j) c3 h6 + o2 → co2 + h2 o