Answer:
HCO₂
Explanation:
From the information given:
The mass of the elements are:
Carbon C = 26.7 g; Hydrogen H = 2.24 g Oxygen O = 71.1 g
To determine the empirical formula;
First thing is to find the numbers of moles of each atom.
For Carbon:

For Hydrogen:

For Oxygen:

Now; we use the smallest no of moles to divide the respective moles from above.
For carbon:

For Hydrogen:

For Oxygen:

Thus, the empirical formula is HCO₂
Answer:
The answer is C. An electrochemical cell.
Explanation:
The aluminum ion react with the sulfide to form aluminum sulfide.
It is 100 because a 5 and up means you round up. also the 9 makes it a 6 rounded up
Answer:
i would help i just dont know sorry
Explanation:
Answer:
It is not "strong acids have a low pH"
Explanation:
I feel it should because that is a true statement but for Primavera it is wrong.