A Method for Producing Pure Copper Metal Involves the Reaction

Multiple Choice

A method for producing pure copper metal involves the reaction of copper(I) sulfide with oxygen gas to give copper metal and sulfur dioxide. Suppose the yield of this reaction is 87%.What mass of a copper ore consisting of 46% copper(I) sulfide must be mined in order to produce 1.0 *10³ kg (1.0 metric ton) of copper metal?

A) 1.4 * 10³ kg
B) 3.2 * 10³ kg
C) 1.3 * 10³ kg
D) 1.5 * 10³ kg
E) 8.0 * 10³ kg