65ml x 1.3 molar = 0.0845 moles solution #1
0.0845 moles / .208 L = 0.4 M
0.4M × 104 ml / 213 ml = .20 M after sig figs
This element is Helium. This is because it has two protons and two neutrons in its nucleus. this makes it have the atomic mass of approximately four atomic mass units. It also has two electrons in the first energy level. . It is therefore a noble gas since this is the only energy level and it obeys the 2n² rule for the filling of energy levels. n in this case is 1 making the maximum number of electrons in the first energy level to be 2.
Answer:
There are three significant figures in the number 20300
Answer is: D) non-indigenous species.
Non-indigenous species or an introduced species is a species living outside its native area, but which has arrived there by human activity, either deliberate or accidental.
Kudzu (Japanese arrowroot) was introduced from Japan into the United States at the Japanese pavilion in the 1876 Centennial Exposition in Philadelphia.
The United States Forest Service estimated the rate of spreading of plant Kudzu to be 2500 acres per year.
