The answer is (4). You may recall the term "radiometric dating," which refers to the dating of old artifacts by measuring proportions of certain radioactive isotopes they contain and making calculations based on their estimated half-lives. Geological formations are dated in this way.
Answer:
Hey there!
35 s represents time.
The s means "seconds."
Let me know if this helps :)
Answer: 204 L
Explanation:
According to ideal gas equation:

P = pressure of gas = 0.262 atm
V = Volume of gas = ?
n = number of moles = 
R = gas constant =
T =temperature =


Thus volume occupied by 11.7 g of Helium in a balloon is 204L
It’s called the solar noon and basically it’s the term for when the sun is at its highest