A scientist who wants to date materials older than 40,000 years would most likely use
Potassium – argon dating or K-AR dating. Potassium-40 is a radioactive isotope
of potassium that decays into argon-40. The half life of potassium-40 is 1.3
billion years far longer than carbon-14.
They do not.
H2O2 is Hydrogen Peroxide.
H2O is water or Hydrogen Dioxide.
Answer:
Such was the case with the concept of pH, introduced in 1909 by Søren Sørensen as a convenient way of expressing acidity—the negative logarithm of hydrogen ion concentration.Jan 8, 2018
Profession: Chemist
Number 2 is Blackland Prairies
The Blackland Prairies region is named for the deep, fertile black soils that characterize the area.
Alcohols have higher boiling points than do<span> ethers and alkanes of similar molar masses because the OH group allows </span>alcohol<span> molecules to engage in hydrogen bonding.
Hope this helps</span>