The compound is sodium chloride
Iron filings can be attracted by the magnet whereas salt can not. So the mixture can be separated by a magnet
Answer:
606 atoms
Explanation:
Add the numbers 145 + 293 + 168
Answer:
hope it helps brainliest pls
Explanation:
<span>The half-life of 9 months is 0.75 years.
2.0 years is 2.0/0.75 = 2.67 half-lives.
Each half-life represents a reduction in the amount remaining by a factor of two, so:
A(t)/A(0) = 2^(-t/h)
where A(t) = amount at time t
h = half-life in some unit
t = elapsed time in the same unit
A(t)/A(0) = 2^(-2.67) = 0.157
15.7% of the original amount will remain after 2.0 years.
This is pretty easy one to solve. I was happy doing it.</span>
