Use the drop-down menus to complete the statements. ___are pure substances that cannot be broken down into a simpler form. are units of two or more atoms. ___ are the smallest possible particles of an element. ___are pure substances made of two or more atoms of different elements.

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

answer:

technetium is the most reactive. this is followed by silver. the least reactive out of these three elements is strontium.