“Highest molecular motion, highest kinetic energy, no forces of attraction, least dense packaging of molecules.” which state of
2 answers:
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Answer:
Age of the atifact is years
Explanation:
- For first -order radioactive decay-
represents activity of radioactive nuclide after t time,
represents initial activity of radioactive nuclide and
represents half-life
- Here,
,
and
Plug-in all the given values in the above equation-
or,
So, age of the atifact is years
Answer:- 1.90 atm
Solution:- It is based on combined gas law equation, PV = nRT
In this equation, P is pressure, V is volume, n is moles of gas, R is universal gas constant and T is kelvin temperature.
If we divide both sides by V then:
We know that, molarity is moles per liter. So, in the above equation we could replace by molarity, M of the gas. The equation becomes:
P = MRT
T = 20 + 273 = 293 K
M =
Let's plug in the values in the equation:
P =
P = 1.90 atm
So, the pressure of the gas is 1.90 atm.