chemistry
the student's lab manual says to mix some of his CaCl2 solution with an aqueous solution of sodium carbonate (Na2CO3). What evidence of a chemical reaction would he expect to see?
chemistry
Mg + Au+ -> Mg2+ + Au what is the oxidation and reduction half reactions
public speaking
President Obama addressing the recent graduates in a commencement exercise is an example of __________ communication
public speaking
President Obama addressing the recent graduates in a commencement exercise is an example of __________ communication
History
Thank you so much Sra, these are great ~
History
Why were the imperialists interested in Jamaica in the 19th or early 20th centuries? Which imperialist country exerted the greatest influence on the areas? How did it exert that influence? If you can answer these questions, help me with my research project, and/or lead me to a...
geometry
if a triangle has a perimeter of 72 and a ratio of 3:4:5. what is the length of all three sides and angles
College Chemistry
The eqm. Constant for a reaction is 2.48 at 25°C. what is the value of ΔG° (kJ) at this temperature? (R=8.314 J/k mol)
College Chemistry
Determine Kc at 298 K for the reaction 1/2 N2(g0 + 1/2 O2(g) + 1/2 Cl2(g)--> NOCl(g), given the following data at 298 K 1/2 N2(g) + O2(g)--> NO2(g) Kp= 1.0 x 10^-9 NOCl(g) + 1/2 O2(g)-->NO2Cl(g) Kp= 1.1 x 10^2 NO2(g) + 1/2 Cl2(g)--> NO2Cl(g) Kp= 0.3
College Chemistry
For the reaction SO3(g)---> SO2(g) + 1/2 O2(g), Kc= 16.7 at 1000 K. What is the value of Kc at 1000 K for the reaction 2 SO2 (g) + O2(g)---> 2 SO3(g)?
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