Mol h2so4=0,6x3=1,8mol
MolOH-=Mol H+=2molh2so4=1,8x2=3,6mol
=> Mol NaOH=3,6mol=>V naoh= 3,6:4=0,9liters.
So, A is the correct answer
The smallest particle of such an element is an atom, which consists of electrons centered around a nucleus of protons and neutrons.
Answer:
is the isotopic notation of the atom
Explanation:
The isotope notation is:

<em>Where a is the mass number = Number of protons + Number of neutrons</em>
<em>b is atomic number = Number of protons</em>
The atomic number define the nature of the atom, the element with atomic number = 15 is phosphorus, P:

a = 15 protons + 16 neutrons = 31
b = 15
is the isotopic notation of the atom.