Answer: The rock is 2000785 years old.
Explanation:
Expression for rate law for first order kinetics is given by:

where,
k = rate constant
t = age of sample
a = initial amount of the reactant = 800
x = amount of daughter isotope = 600
a - x = amount left after decay process = amount of parent isotope = (800-600) = 200
Half life is the amount of time taken by a radioactive material to decay to half of its original value.




The rock is 2000785 years old.
Answer:
A. African faiths and Catholicism
Answer:
The correct answer is D. The deepest parts of the oceans, located near the continents, are the oceanic trenches.
Explanation:
The ocean trenches are large depressions at the base of the seabed, which constitute the deepest parts of the Earth. Of these, the Mariana Trench, located in the Pacific Ocean to the east of China, is the deepest, being approximately 11,000 meters deep.
These trenches are formed by the activity of tectonic plates, specifically when one plate moves below the other and by the force exerted a depression is generated in the seabed, followed by a chain of volcanic islands at a close distance.
Answer:
The good answers here are:
A. They are more reflective (higher albedo) than most of the terrestrial planets.
C. They are larger than the terrestrial planets.
Explanation:
Light colored clouds found there have a better, reflective albedo. And both planets are so much bigger than Earth, they´re the biggest planets of our solar system. These are some factors of their brightness in our sky.