The answer is 4.37055148 ng/s
Step-by-step explanation:
A unit of mass, weight, or volume is called ounce used in most British derived customary systems of measurement. The common avoirdupois ounce (approximately 28.3 g) is 1 ⁄ 16 of a common avoirdupois pound.
1 ng = 3.527396194958E-11 oz
1 oz = 28349523125 ng
Hence by calculating for 5.55 * 10^-7 oz/hr, we get 4.37055148 ng/s.