The total number of moles of neutrons present in 108 mL108 mL H2O(l)H2Ol are

Step 1: Calculate the number of moles of H2O

First, we need to find out how many moles of H2O are present in 108 mL. The molar mass of water (H2O) is approximately 18 g/mol. Since the density of water is 1 g/mL, 108 mL of water is equivalent to 108 g.

Number of moles = mass / molar mass Number of moles = 108 g / 18 g/mol = 6 moles of H2O

Step 2: Calculate the number of moles of neutrons in H2O

Each molecule of H2O contains 10 neutrons (2 in each hydrogen atom and 8 in the oxygen atom). Therefore, 1 mole of H2O contains 10 * Avogadro's number of neutrons.

So, 6 moles of H2O contain = 6 * 10 * Avogadro's number of neutrons

Step 3: Convert the number of neutrons to moles

We know that 1 mole contains Avogadro's number of particles. Therefore, to convert the number of neutrons to moles, we divide by Avogadro's number.

Number of moles of neutrons = 6 * 10 * Avogadro's number / Avogadro's number = 60 moles of neutrons

So, there are 60 moles of neutrons in 108 mL of water.