A chemist went on a trip to Zambales to obtain a sample of chalcocite (copper (I) sulfide), one of the most important ores of copper. He tried to extract copper from the ore by performing these 2 steps: a.) After grinding, the chemist “roasted” (reacted with oxygen gas in the presence of heat) the powdered chalcocite sample to form a red cuprous oxide precipitate and gaseous sulfur dioxide. b.) He then reacted the red precipitate with hydrogen gas inside a heated furnace to produce metallic copper and water vapor. Question: If the chemist acquired 98.4 grams of chalcocite during his trip, (1) calculate the theoretical yield of metallic copper in his experiment. (2) If the chemist obtained 50.2 grams of metallic copper from his experiment, what is the %yield?
States of Matter
The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates).
Chemical Reactions and Equations
When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.
A chemist went on a trip to Zambales to obtain a sample of chalcocite (copper (I)
sulfide), one of the most important ores of copper. He tried to extract copper from
the ore by performing these 2 steps:
a.) After grinding, the chemist “roasted” (reacted with oxygen gas in
the presence of heat) the powdered chalcocite sample to form a red
cuprous oxide precipitate and gaseous sulfur dioxide.
b.) He then reacted the red precipitate with hydrogen gas inside a
heated furnace to produce metallic copper and water vapor.
Question: If the chemist acquired 98.4 grams of chalcocite during his trip, (1) calculate the theoretical yield of metallic copper in his experiment. (2) If the chemist obtained 50.2 grams of metallic copper from his experiment, what is the %yield?
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