Answer:
After 2 half-lives there will be 25% of the original isotope, and 75% of the decay product. After 3 half-lives there will be 12.5% of the original isotope, and 87.5% of the decay product. After 4 half-lives there will be 6.25% of the original isotope, and 93.75% of the decay product.
Explanation:
The Earth's rotation has no relation to the phases of the moon.
Like everything else in the sky, the moon rises in the east just like the stars, planets, and the sun.
Any organism in motion possesses kinetic energy. Kinetic energy is the energy the body has while in motion.
Answer:
The volume is 
Explanation:
From the question we are told that
The number of moles of the gas is 
The volume of the gas is 
The of moles of the gas that leaked is 
Generally from the ideal gas law
Generally at constant pressure and temperature

So 
=> 
=>
=> 