So ATMs cancel, the Kelvins cancel and we get 5.31 times ten to negative four moles per liter. So this is our molarity. Now let's find the number of moles of polymer. If we find the number of moles of polymer, we could take our amount in grams, divide that by our moles and we get mol and mass or mass per mole. So 5.31 times ten to negative four molar which we got from here, times the amount of solution we have, which is 20 ML or 0.2 liters because we have to convert milliliters to liters. We divide this by thousand and we get to zero two the liters cancel and we get 1.6 times ten to negative four moles of polymer.