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?

Achemist has dissolved a certain substance in water. the chemist knows that more of the substance could be dissolved into the water before it stops dissolving. therefore

Cryolite, na3alf6(s), an ore used in the production of aluminum, can be synthesized using aluminum oxide. start this question by first balance the chemical equation.1.) balance the equation: - alo3(s)+naoh(l)+hf(> na3alf6+h2o(g). 2.) if 17.5 kilograms of al2o3(s), 51.4 kilograms of naoh(l), and 51.4 kilograms of hf(g) react completely, how many kilograms of cryolite will be produced? 3.)which reactants will be in excess, (al2o3, naoh, or hf) 4.)what is the total mass of the excess reactants left over after the reaction is complete in kg?

27 drag each label to the correct location on the image. a particular exosolar system has five planets in total: a, b, c, d, and e. the table lists the orbital periods of these planets in days. planet orbital period (days) a 600 b 80 c 1,000 d 500 e 100 move each planet to its orbit in the system.