Which statement best explains why most atomic masses on the periodic table are decimal numbers?
(1) atomic masses are determined relative to an h–1 standard.
(2) atomic masses are determined relative to an o–16 standard.
(3) atomic masses are a weighted average of the naturally occurring isotopes.
(4) atomic masses are an estimated average of the artificially produced isotopes.

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

d.) circle motion requires a force to give it a centripetal acceleration.