Answer:
6.9 (two sig figs)
Explanation:
2.375 + 4.5 = 6.875 = 6.9
When adding or subtracting, sig figs are determined by the least number of digits past the decimal point.
The answer is A. Has a low pH in solution.
I believe this process is called cellular respiration.
Steel wool is neither, but it is mixture of iron with carbon.
