8. An ionised sample contained the ions 23Nat which had a time of flight of 1.134 x 105 s and an unknown element X whose ions had a time of flight of 1.689 x 10-5 s. Find the Ar of the unknown
element.
In
(4)

Consider the nuclear equation below. 239/94 pu—-> x+ 4/2 he. what is x?

Correct relationship between molecular formula and empirical formula

Which best describes the present-day universe? opaque, expanding very slowly, stars produce heavy elements transparent, expanding at an accelerated rate, stars produce heavy elements opaque, expanding at an accelerated rate, stars produce only hydrogen and helium transparent, expanding very slowly, stars produce only hydrogen and helium