Calculate the Mass of Coal That Produces the Same Amount

question 40

Multiple Choice

Calculate the mass of coal that produces the same amount of energy as the combustion of 3.90 kg hydrogen gas. $$\begin{array} { l l } \underline { \text { Fuel } } & \underline {\text { Energy released } ( \mathrm { kJ } / \mathrm { g } ) }\\\text { Coal } & 29 \\\text { Hydrogen } & 120\end{array}$$

• A) \(1.6 \times 10 ^ { 3 }\) g
• B) \(1.6 \times 10 ^ { 4 }\) g
• C) 16 kg
• D) 0.94 kg
• E) \(9.4 \times 10 ^ { 2 }\) kg

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Definitions:

Excess Supply

The situation in which the quantity of a good or service offered by producers exceeds the quantity demanded by consumers at a given price, often leading to a decrease in prices.

Market Price

The current price at which a good or service can be bought or sold, determined by the intersection of demand and supply forces in the market.

Quantity Demanded

The total amount of goods or services that consumers are willing and able to purchase at a given price in a specific time period.

Quantity Supplied

The quantity of a product or service that suppliers are ready and capable of selling at a particular price during a certain timeframe.