One of the features, and one of the disastrous features, of modern society, is that, in our laziness, we depend upon prodders and encourage a vast system of prodding.

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

practical process described pest part of scientific investigation.

because practical knowledge is powerful then therotical knowledge.

c. electrical charges of ionic bonds.