When reaction 1) and 2) below are added together, the result is reaction 3).1) h2o(l) + hno2(aq) ⇌ h3o+(aq) + no2‒(aq) k1 = 4.50 × 10‒42) h3o+(aq) + oh‒(aq) ⇌ 2 h2o(l) k2 = 1.00 × 10143) hno2(aq) + oh‒(aq) ⇌ no2‒(aq) + h2o(l) k3=? find the equilibrium constant, k3?

Ajet plane is speeding down the runway during takeoff. air resistance is not negligible. identify the forces on the jet.

Which of your 24 wells had indications that a chemical reaction occurred? how were you able to tell that a chemical reaction occurred? which of your 24 wells had indications that a physical reaction occurred? how were you able to tell that a physical reaction occurred? report on both mixing and evaporation. make a general statement about whether your hypotheses were validated or rejected. must your hypotheses be correct for this to be a successful laboratory?

Bridget is in science class. her teacher gives her two unknown substances and asks her to determine their relative ph. she places a piece of red litmus paper into both substances. the litmus paper turns purple when she places it into substance i. the litmus paper turns blue when she places it into substance ii. a. substance i is a neutral substance and substance ii is an acid. b. substance i is a neutral substance and substance ii is a base. c. substance i is an acid and substance ii is a base. d. substance i is a base and substance ii is a neutral substance.