Answer:
2.8248 g
Explanation:
First, consider the balanced chemical equation:

Then we calculate the number of moles in 4.11 g of citric acid:
n(citric acid)=
According to the balanced reaction, one mole of citric acid produces 3 moles of carbon dioxide. That's 3 times the number f moles of citric acid. So we will do the same with the available number of moles of citric acid.
so n(carbon dioxide) = 0.0214 mol*3=0.0642 mol
mass(carbon dioxide)= mass*molar mass=0.0642 mol* 44g/mol
= 2.8248 g
The correct answer is C because Zn+2HCl= ZnCl2+H
Answer:
One mole
Explanation:
It tells u the concentration
1) period
2) the answer is D) I because they are in the same column
3) B)Ge because they are in the same column
4) A) Al because they are in the same column (share same characteristics)
5) D) they have the same number of valence electrons
6) D) nonmetals