Fe2O3 because O has a -2 charge and Fe and +3, you want the charges to equal each other so if you have 2 Fe with +3 charge the charge becomes 6 if you have 3 O with -2 charge the charge becomes 6.
<em>Answer:</em>
Explanation:
<em>Formula:</em>
Where Nt is the amount of substance remaining after time t,
N0 is the amount of substance at time t = 0,
t is the time at which we have to find out how much substance disintegrated from t = 0 to t = t
& t_1/2 is the half life corresponding radioactive sample.
<em>Given:</em>
N0 = 200g
t= 40 days
t1/2 = 4 days
<em>To find:</em>
Nt =?
<em>Solution:</em>
Substituting given data in above formula,
<u>Thanks for joining brainly community!</u>
Answer:
option A
Explanation:
431256 is in correct order
Everything haplens due to a necessity hence u need to know the need.next u definitely need a plan, then do the work,evaluating and rediesigning is necessary to give it a final look and at last obviously test the results