Na: +1 (sodium)
S: -2 (sulfur)
=> Na2S
Answer:
After 4 days 10 g will left
After 8 days 5 g will left.
Explanation:
Given data:
Half life of isotope = 4 days
Total amount of sample = 20 g
Amount left after each time period = ?
Solution:
The half life of radioactive isotope is 4 days it means after 4 days the amount left will be half of total amount.
20 g/2 = 10 g
The half amount which is left will be consume in next 4 days and remaining amount will be,
10 g/2 = 5 g
After 4 days 10 g will left
After 8 days 5 g will left.
I think it is
Barium Sulfide + Platinum Difluoride = Barium Fluoride + Platinum Sulfide<span>
</span>
Answer:
1, experimentary
2, high potassium
3, testes
4, consistent
5, wi-fi
6, yes, it's not good enough
7, possibility
8, because it's not effective
Explanation:
thanks me later
The correct answer is Contractile Vacoules
