When Copper Reacts with Sulfur at High Temperature, Copper(I) Sulfide $\rightarrow$

question 4

Multiple Choice

When copper reacts with sulfur at high temperature, copper(I) sulfide is formed. 2Cu(s) + S(s) $\rightarrow$ Cu₂S(s) If the mass of the Cu₂S formed is 1.17 g, what mass of copper should have reacted?

• A)0.934 g
• B)not enough information
• C)0.78 g
• D)2.34 g
• E)0.467 g

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Definitions:

Molecular Formulas

Notation used to represent the quantity and type of atoms present in a molecule, without displaying bonding or structure.

Sawhorse Structure

A pictorial representation used in chemistry to visualize the spatial arrangement of bonds and atoms in a molecule, providing a three-dimensional perspective.

Eclipsed Conformer

A conformer of a molecule in which adjacent atoms are aligned with minimal spatial separation, leading to maximal torsional strain.

Ethane

A colorless, odorless gas, which is the second simplest alkane, with the chemical formula C2H6.