Answer:
Answer is B) 20.0 moles
Explanation:
From the equation,
1 mole of Fe2O3 = 2 moles of Al
therefore 10.0 moles of Fe2O3 = 10×2
= 20.0 moles.
Answer:
Demonstration 1 showed a chemical change because a new gaseous substance was formed, and demonstration 2 showed a physical change because liquid water became water vapor.
Explanation:
Chemical changes alter the chemical makeup of a subject, and a physical change only alters the appearance of a subject, not the chemical makeup.
Answer:
0.39760273
Explanation:
I typed into calculator hope it's right.
Water is held together by hydrogen bonds.
Water molecule: H2O:
--- = hydrogen bond
O
/ \
H H ---O
/ \
H H
The answer should be neutrons electrons and protons
