Changing of pH

Freshly distilled water has a pH of about 5.6 and it changes to 6 on storage. WHY?

Which is not a functional group A. Carboxyl B. Halide C. Hydroxyl D. Protein

What is the hybridization at each carbon atom in the molecule? write hybridizations starting on the left in molecule?

What term is used for the electrons in the outermost shell?

Which compounds give a 1h nmr spectrum with two signals in a ratio of 2:3?

How many moles of lithium metal would need to react with excess oxygen gas to produce 4 moles of lithium oxide in the following reaction? 4Li + O2 → 2Li2O (My answer: C) 1 2 4 8

Refrigerators are usually kept at about 5°C, while room temperature is about 20°C. If you were to take an ""empty"" sealed 2-liter soda bottle at room temperature and place it in the fridge, would you expect it to contract to one-fourth its original

You want to analyze a cadmium nitrate solution. what mass of naoh is needed to precipitate the cd2 + ions from 32.7 ml of 0.499 m cd (no3) 2 solution?

How much is 35° C in F?

Which describes a precipitate in a chemical reaction? a a gaseous product formed from aqueous reactants b a solid reactant that forms aqueous product c a gaseous reactant that forms aqueous products d a solid product formed from aqueous reactants

Prepare a solution that is 0.1 M acetic acid and 0.1 M sodium acetate by measuring out 5.0 mL of the 1.0 M acetic acid solution and 5.0 mL of the 1.0 M sodium acetate solution in a 100 mL graduated cylinder, diluting the 10.