Answer: It was obtained 8515 years ago
Explanation:
Expression for rate law for first order kinetics is given by:
where,
k = rate constant
t = age of sample
a = let initial amount of the reactant
a - x = amount left after decay process
a) to find the rate constant:
Half life is the amount of time taken by a radioactive material to decay to half of its original value.
b) for completion of 36% of reaction
t = 8515 years
The time was 8515 years.
Answer:
"Energy flows in one direction, matter recycles."
Explanation:
Matter "returns" to the environment by the deutucators. Energy comes from the sun and is transmitted to higher trophic structures.
Answer: False
Explanation:
Coriolis effect is when objects moving in a straight line appear to curve because you are rotating. The earth is constantly spinning. For example, Hurricanes form when air rushes from all directions into a low pressure region, air is going to rush towards the center. In the northern hemisphere this creates hurricane with counterclockwise spirals in the southern hemisphere it does the opposite; it creates hurricanes with clockwise spirals
