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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Definitions:

Monetary Policy

The actions of a central bank, currency board, or other regulatory committees that determine the size and rate of growth of the money supply, which in turn affects interest rates.

Inflation

An increase in the general price level of goods and services in an economy over a period of time, leading to a decrease in the purchasing power of money.

Time Inconsistency

Refers to the situation where a decision-maker's preferences change over time, so that what is preferred at one point in time is inconsistent with what is preferred at another time.

Short-Run Phillips Curve

A graphical representation showing the inverse relationship between the rate of inflation and the rate of unemployment in the short term.