The sum of the number of protons and neutrons in an atom is called the of the element. 1. Molar Mass 2. Atomic number 3. Average atomic mass 4. Mass number o2 o4 o3 o1

The sum of the number of protons and neutrons in an atom is called the Mass number.

in the given question, the partial pressure is calculated by using the ideal gas equation, that is, pv = nrt

here, p is pressure, v is volume = 25 l, n is number of moles = 0.0104 moles, r is gas constant = -0.0821 l.atm / mol.k

t is temperature = 273 k

p = nrt / v

p = (0.0104 mol × 0.0821 l.atm / mol.k × 273 k) / 25 l

= 0.0093 atm

bcde is the incorrect answer it is a