Hey there!
A half-life means after a certain amount of time, half of that substance will be gone/changed after that time.
There are 3 half lives in 11.46 days because 11.46 ÷ 3.82 = 3.
So, we divide the 3mg sample in half 3 times.
3 ÷ 2 = 1.5
1.5 ÷ 2 = 0.75
0.75 ÷ 2 = 0.375
There will be 0.375mg of radon-222 remaining after 11.46 days.
Hope this helps!
Answer:
Explanation:
Particles in both liquids and gases (collectively called fluids) move randomly. This is called Brownian motion. They do this because they are bombarded by the other moving particles in the fluid. Larger particles can be moved by light, fast-moving molecules.
Answer:
the answer is a. 0.0012km
Answer:
The correct answer is option C.
Explanation:
The given rate law of reaction :
Rate of the reaction after doubling the concentration of Y : R'
The rate of the reaction will increase by the factor of 4.
Answer: In an experiment, mice were fed glucose (C6H12O6) containing a small amount of radioactive carbon. The mice were closely monitored, and in a few minutes, radioactive carbon atoms showed up in _Carbon dioxide/Carbon IV oxide (CO2)_
Explanation: The end product of Glucose at the end of metabolism is Carbon dioxide, water and ATP.
C6H12O6 + 6O2 ----------> 6CO2 + 6H2O + ATP (Energy)
The carbon is converted to Carbon dioxide. So, the radioactive Carbon appears in the Carbon dioxide/Carbon IV oxide (CO2).