Temmick

ZN(s) + 2H+(aq) produces ZN2+(aq) +H2(g) A sample of Zinc is placed in the ice calorimeter. if 0.0657g of Zinc causes a decrease of 0.109ML in the ice/water volume of the calorimeter, what is the enthalpy change, per mole of Zinc, for the above reaction p...

A mixture is prepared using equal masses of two volatile liquid benzene, C6H6, and ethanol, C2H5OH. what is the mole fraction of benzene in this mixture? for my answer I got 0.370 C6H6. please help!

Explain how the Punnett Square is related to probabilities, and describe what different regions of a Punnett Square represent

Find the values of theta (0,2pi) that satisfy sin theta= square root 3 over 2 Solve 2costheta sintheta-sintheta on (0, 2pi) please I really need help in knowing how to solve these questions. quite urgent. I don't understand how to do them at all.

This equation decribes oxidation of acidified solution of sodium oxalate(Na2C2O4) by potassium permanganate(KMnO4): 5 C2O4^2- + 2Mn04^- + 16H2SO4 to produce 10Co2 + 2Mn^2- + 16HSO4^- + 8H2O. what volume of 0.127M sodium oxalate in sulphuric acid will reac...

Silver nitrate is added to a solution and precipitate forms. This precipitate dissolves when concentrated ammonia is added. What anion was present in the original solution? I don't know how to answer this. Also can someone please explain how to identify a...

Thanks soo much :)

hmm, ok thanks