Answer:
C
Explanation:
The other poster is wrong that is just a mixture, the sugar dissolved in tea tho is the right answer 90% sure
The answer is D. The sum of the mass of all the pieces of paper is 2 grams. Hope this helped! Good luck! :)
<u>Answer:</u> The concentration of radon after the given time is
<u>Explanation:</u>
All the radioactive reactions follows first order kinetics.
The equation used to calculate half life for first order kinetics:
We are given:
Putting values in above equation, we get:
Rate law expression for first order kinetics is given by the equation:
where,
k = rate constant =
t = time taken for decay process = 3.00 days
= initial amount of the reactant =
[A] = amount left after decay process = ?
Putting values in above equation, we get:
Hence, the concentration of radon after the given time is
Answer:
Hydrogen ion.
Explanation:
Hydrogen ion is present in the acids which indicates if they are safe for eating or not. The weak acid is present in citrus so it is safe to eat. Weak acid means the concentration of hydrogen ion is lower. If this concentration exceeds so the food is not safe to eat or drink. The pH of acid more than 5 is good to eat but below 5 can adversely affect our body if we consume it.
The distance covered by each atom of copper will be twice the radius of each atom, which is its diameter
it will be like as shown in diagram....
Let the number of atoms required is "n"
thus total atoms required will be
Let us convert pm to mm for unit cancellation.
Thus
hence