You heat 3.784 g of a mixture of Fe3O4 and FeO to form 4.102 g Fe2O3. the mass percent of FeO originally in the mixture was: A: 94.4%
B: 32.8%
C: 67.2%
D: 22.7%
E: none of these

answer: at room temperature (roughly 20 degrees c), you can dissolve 203.9 grams (or 200 grams) of sugar in 100 ml of water. as water temperature increases, the amount of sugar that will dissolve increases, up to about 500 grams of sugar in 100 ml water at 100 degrees c.

explanation:

i think its 100.

hope this !

the answer is symmetrical : )