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A solution contains SO42-, Ba2+ and NO3-   and Ca2+ is added, would you expect there to be a a precipitate?  If so what will the precipitate(s) be?  How do you know?                 

Pour les questions 6 à 10, tu dois transformer les phrases. (élève): Je – C’est __________ élève, Isabelle.

How would the reduction potential of the oxidizing agent in a redox reaction compare to the reduction potential of the reducing agent?

Using Hess’ law, calculate the change in enthalpy for the following two reactions.  Show all of your work. a) CH4(g) + 2O2(g) –> CO2(g) + 2H20(l) b) CaO(s) + 1/2O2(g) + 2HI(g) –>  I2(g) + Ca(OH)2(s)    

Describe (not list) two differences between ionic bonds and polar covalent bonds.

Complète la phrase en utilisant le bon pronom possessif. Ces stylos sont à vous ? – Oui, ce sont ____________.  

The initial concentrations or pressures of reactants and products are given for each of the following systems.Calculate the reaction quotient and determine the direction in which each system will proceed to reach equilibrium. a) b) c)  

Complète la phrase en utilisant le bon pronom possessif ou le bon adjectif possessif.  Tes fleurs poussent rapidement, pas ______________.  

What is the pH of a 0.65M solution of the weak acid CH3NH3+, it is the conjugate acid of the weak base CH3NH2 that has a Kb = 4.4 × 10−4.

Complète la phrase en utilisant le bon pronom possessif ou le bon adjectif possessif.  Ma robe est verte, _________ jupe est grise.