Answer:
36.51%.
Explanation:
First find the percentage of iron in pure Fe2O3 using the atomic masses of the elements:
= (2 * 55.845) * 100 / (2*55.845+ 3*15.999)
= 69.94 %.
So the percentage of iron in the mixture
= 52.2 * 0.6994
= 36.51 (answer).
Answer:
D
Explanation:
Color, texture, and density are all physical properties but reactivity is a chemical property so the answer is D.
False because I think it’s supposed to be photoheteroterotrophs
Answer:
The second choice: physical change because even though gas formation was observed, the water was undergoing a state change, which means that its original properties are preserved
(WAS ALREADY ANSWERED PREVIOUSLY)
