Answer:
42.9%
Explanation:
the total number of coins is 15+14+6 = 35
so to find the % of pennies, divide the number of pennies by the total number of coins and times it all by 100
15/35 x 100 = 42.9%
4Fe + 3O2 -> 2 (Fe2O3)
Both sides have 4Fe and 6O.
B. Decomposition.
<span>The electrodes used must not react with the elements thus formed; platinum is favorite for these.</span>
Answer:
2.82*10^23
Explanation:
please see attached for work!