What's the oxidation number of CH3CH2OH? I searched everywhere and the first carbon is apparently - 3, but it's wrong according to my teacher, and it's supposedly - 2.

Can anyone help me on how it turned out - 2? I'm scared he'll bring another question like that in the exam. ​

Achemistry student needs to standardize a fresh solution of sodium hydroxide. he carefully weighs out of oxalic acid , a diprotic acid that can be purchased inexpensively in high purity, and dissolves it in of distilled water. the student then titrates the oxalic acid solution with his sodium hydroxide solution. when the titration reaches the equivalence point, the student finds he has used of sodium hydroxide solution.calculate the molarity of the student's sodium hydroxide solution. be sure your answer has the correct number of significant digits.

Volume is a measurement of how fast particles of a substance are moving

Acompound is isolated from the rind of lemons that is found to be 88.14% carbon and 11.86% hydrogen by mass how many grams of c and h?