the no. of neutrons in 5g of D2O(Dis 2/1 H) are:

madar choud

You are right

That''s the wrong answer

To determine the number of neutrons in 5g of D2O, we first need to know the atomic mass of deuterium (D) and oxygen (O).

The atomic mass of deuterium (D) is approximately 2.014 amu, and the atomic mass of oxygen (O) is approximately 16.00 amu.

Since there are two deuterium atoms in D2O, the total atomic mass of deuterium in D2O is 2 x 2.014 = 4.028 amu.

The atomic mass of oxygen in D2O is 16.00 amu.

To convert the mass of D2O to moles, we divide the given mass by the molar mass of D2O.

The molar mass of D2O is the sum of the atomic masses of its constituent atoms: 2 x (atomic mass of D) + atomic mass of O.

Molar mass of D2O = 2 x 2.014 + 16.00 = 20.028 amu.

Now, we can calculate the number of moles of D2O by dividing the given mass of 5g by the molar mass of D2O:

Number of moles of D2O = 5g ÷ 20.028 g/mol

Once we have the number of moles of D2O, we can determine the number of molecules of D2O using Avogadro's number, which is approximately 6.022 x 10^23 molecules/mol.

Number of molecules of D2O = Number of moles of D2O x Avogadro's number

Finally, to calculate the number of neutrons in D2O, we need to know the number of deuterium atoms in D2O. Since there are two deuterium atoms in D2O, we can use the following equation:

Number of neutrons in D2O = Number of deuterium atoms x Number of neutrons per deuterium atom

To find the number of neutrons per deuterium atom, we subtract the number of protons (which is 1) from the atomic mass of deuterium (which is 2.014 amu). This gives us the mass number, which represents the sum of protons and neutrons in the atom.

Mass number of deuterium = Atomic mass of deuterium - Number of protons = 2.014 - 1 = 1.014

Therefore, the number of neutrons per deuterium atom is approximately 1.

Finally, we can calculate the number of neutrons in D2O:

Number of neutrons in D2O = Number of deuterium atoms x Number of neutrons per deuterium atom

I hope this explanation helps you understand how to calculate the number of neutrons in 5g of D2O!

mols = grams/molar mass

There are 6.02E23 molecules in a mole.