This is the chemical formula for acetic acid (the chemical that gives the sharp taste to vinegar): an analytical chemist has determined by measurements that there are 3.2 moles of carbon in a sample of acetic acid. how many moles of oxygen are in the sample?

                    3.2 moles of Oxygen

                        Acetic Acid having chemical formula C₂H₄O₂ and structural formula attached below is the second member of carboxylic family in organic compounds. It is commonly used as vinegar i.e. a mixture containing 5 % Acetic acid and 95 % water.

As shown in structure 1 mole of Acetic acid contains 2 moles of Carbon atoms, 4 moles of Hydrogen atoms and 2 moles of Oxygen atoms respectively. Hence, the number of moles of Oxygen atoms contained by acetic acid containing 3.2 moles of Carbon is calculated as,

                      2 moles of C accompany  =  2 moles of O

So,

               3.2 moles of C will accompany  =  X moles of O

Solving for X,

                     X  =  (3.2 mol C × 2 mol O) ÷ 2 mol C

                      X =  3.2 mol of Oxygen

yes, water is wet, just as it makes other things wet, it is wet itself, kinda like ice, when ice is in water, the ice makes water cold, and ice is cold, therefore with that example, water is wet

your answer would be a. 12.5 kg