(2) U-238 is the radioisotope used in dating geological formations. Uranium-238 has a half-life of 4.46 billion years, which makes it suitable to date such old formations.
The other options do not have such long durabilities and half-lives.
The temperature of the gas is proportional to the average kinetic energy of its molecules. Faster moving particles will collide with the container walls more frequently and with greater force. This causes the force on the walls of the container to increase and so the pressure increases.
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The best example of how electromagnetic energy is used in everyday life is <span>a patient receiving an X-ray in a hospital</span>
They are called reactants.
Answer: 2:2 but if simplified it’s 1:1
Explanation: