Diesel fuel for automobiles and trucks is a mixture of hydrocarbons that can be modeled by C16H34. How many grams of O2 are needed to react with 0.500 mol C16H34

Plz me i need i will give a brain

Abox contains 1 plain pencil and 4 pens. a second box contains 5 color pencils and 5 crayons. one item from each box is chosen at random. what is the probability that a plain pencil from the first box and a color pencil from the second box are selected? write your answer as a fraction in simplest form.

If the discriminant if a quadratic equation is 4 which statement describes the roots?