What is the mass of 2.50 × 1025 molecules of sugar (c12h22o11)?

To determine the mass of the sugar molecules given, we  need to convert the given value into moles by using the a constant. Avogadro's number represents the number of units in one mole of any substance. This has the value of 6.022 x 10^23 units / mole. This number can be used to convert the number of atoms or molecules into number of moles. Then, by using the molar mass of sugar, we can convert from moles to grams. Molar mass of sugar is 342.3 g/mol. We do as follows:

2.50 × 10^25 molecules of sugar ( 1 mol / 6.022x10^23 g ) ( 342.3 g / 1 mol) = 14210.40 grams of sugar present

Answer (b) supersaturation;

"form only at boundaries  between two continental plates." this is the correct answer.