In the reaction Zn + Cu2+!Zn2++ Cu, the Cu2+ion what happens 1. gains electrons
2. loses electrons
3. gains protons
4. loses protons

What are transitions between a liquid and a solid called? identify which way they are transitioning

Calculate - analysis of compound composed of iron and oxygen yields 174.86 of fe and 75.14g of o. what is the empirical formula for this compound?

Achemistry student weighs out 0.306 g of citric acid (h3c6h5o7), a triprotic acid, into a 250 ml volumetric flask and dilutes to the mark with distilled water. he plans to titrate the acid with 0.1000 m naoh solution. calculate the volume of naoh solution the student will need to add to reach the final equivalence point. be sure your answer has the correct number of significant digits.