One Way to Isolate Metals from Their Ores Is by a Chemical

question 59

Multiple Choice

One way to isolate metals from their ores is by a chemical reaction of the metal oxide with carbon as shown below (M = metal) :
$2 \mathrm { MO } ( s ) + \mathrm { C } ( s ) \rightarrow 2 \mathrm { M } ( s ) + \mathrm { CO } _ { 2 } ( g )$ If 31.75 g of a metal oxide reacts with excess carbon to form 4.07 L of CO₂ at 100°C and 1.50 atm, what is the identity of the metal?

• A) Hg
• B) Mg
• C) Cu
• D) Pb
• E) Cd

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