A Copper Ore Consisting of 12

question 129

Multiple Choice

A copper ore consisting of 12.5% copper(II) sulfide, when heated and reacted with oxygen gas, produces copper(II) oxide and sulfur dioxide. If the reaction has a 90.0% yield, how many grams of copper(II) oxide are produced when 1.00 kg of the copper ore is processed?

• A)93.7 g
• B)104 g
• C)116 g
• D)150 g
• E)749 g

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Definitions:

Alpha Waves

Brainwave patterns associated with relaxed wakefulness and meditation, typically in the frequency range of 8 to 12 Hz.

Meditating

The practice of focusing one's mind in silent reflection for the purpose of relaxing or spiritual growth.

Hypnotized

The state of having one's attention and consciousness altered by hypnotism, making them more open to suggestion.

Delta Waves

Slow brain waves primarily associated with deep sleep and aid in healing and regeneration in the brain.