Answer:
Pistil
Explanation:
I believe it is the pistil, because the pistil is part of the <em>female </em>reproductive system of a flower. A stamen is for the male reproductive system.
Vascular plants have two tube like structures (phloem=nutriens/sugar and xylem=water) one of them carries water and the other one carries nutrients
Answer:
It's 23.14 percent
Explanation:
First, the mass of all the elements are:
N = 14
O = 16
Fe = 56
In this molecule you have 3 atoms of N, and 9 atoms of O, so:
3•14 = 42
16•9 = 144
The whole mass of the molecule is:
56 + 42 + 144 = 242
242/100 = 2.42, so 1% is 2.42
56/2.42 = 23.14%
pOH of a solution = 5.95
<h3>Further explanation</h3>
Given
The concentration of hydronium ions : 8.9 x 10⁻⁹
Required
pOH
Solution
pOH = - log[OH]
[H₃O⁺]= 8.9 x 10⁻⁹
pH = - log[H₃O⁺]
pH = 9 - log 8.9
pH = 8.05
pH + pOH = 14
pOH = 14-pH
pOH= 14-8.05
pOH = 5.95