Escaping from the haunted house, Anna ran home immediately to her chemistry lab back at the high school. After analysis of the gold heart, she found the heart was not composed of pure gold, but gold (III) oxide (Au2O3). What percentage (by mass) was gold in the heart? a) 10.9% Au c) 89.1% Au
b) 81.2% Au d) 92.9% Au

organisms are more likely to be more preserved in mud than sand because mud is moist and wet, while sand is very dry.

the temperature of the gas, in k, not celsius.

answer:

the reaction is type of combination reaction.

explanation:

on the product side, there are 2 molecules of bonded to fe   which means one atom of fe are combined two molecules of . so, balanced chemical equation becomes :

this reaction follows the reaction type of combination reaction. a combination reaction is defined as chemical reaction in which reactants combines together to form a single product.