The fossil could get damaged and broken into smaller pieces. That is a way it could make it difficult to determine the fossils age.
Radioactive decay => C = Co { e ^ (- kt) |
Data:
Co = 2.00 mg
C = 0.25 mg
t = 4 hr 39 min
Time conversion: 4 hr 39 min = 4.65 hr
1) Replace the data in the equation to find k
C = Co { e ^ (-kt) } => C / Co = e ^ (-kt) => -kt = ln { C / Co} => kt = ln {Co / C}
=> k = ln {Co / C} / t = ln {2.00mg / 0.25mg} / 4.65 hr = 0.44719
2) Use C / Co = 1/2 to find the hallf-life
C / Co = e ^ (-kt) => -kt = ln (C / Co)
=> -kt = ln (1/2) => kt = ln(2) => t = ln (2) / k
t = ln(2) / 0.44719 = 1.55 hr.
Answer: 1.55 hr
Answer: D) They share electrons
Explanation: Nonmetals under goes a bond called covalent bond. The chemical bond that requires the sharing of electron pairs is known as covalent bond. This bond is of three types namely; polar covalent, non polar covalent, and coordinate covalent.
It's is very difficult for an electron to be removed from nonmetals, that is, they exhibit high ionization energy.
So because of this characteristics, when two nonmetals bond, they share electrons instead of transferring electron.
Intertidal zone is the shallowest part of the ocean ecosystem, where the ocean floor os covered and uncovered as the tide goes in and out
Answer:
high melting and boiling points
Explanation: