High School

We appreciate your visit to The amount of energy released by burning a fuel source measured in energy per mass is called the fuel value If all of the energy. This page offers clear insights and highlights the essential aspects of the topic. Our goal is to provide a helpful and engaging learning experience. Explore the content and find the answers you need!

The amount of energy released by burning a fuel source, measured in energy per mass, is called the fuel value. If all of the energy obtained from burning 1.27 lb of ethane (fuel value is 11.36) is used to heat 128 kg of water at an initial temperature of 19.4°C, what will the final temperature of the water be?

A) 82.5°C
B) 43.6°C
C) 27.8°C
D) 19.4°C
E) 0.0°C

Answer :

Final answer:

By using the fuel value of ethane, we can calculate the energy released when it is burned. This energy is then absorbed by water, causing it to increase in temperature. By using the specific heat capacity of water and the amount of energy absorbed, the final temperature of the water is calculated to be roughly 31.7°C.

Explanation:

The problem deals with the concept of heat transfer, specifically how much the temperature of a quantity of water will rise due to the energy released by burning a certain amount of fuel. First, we need to convert the weight of ethane from pounds to kilograms (since the fuel value is given in energy/mass, and mass is generally measured in kilos in these calculations) which is 1.27 lb = 0.575 kg. So, the amount of energy released is 0.575 kg * 11.36 MJ/kg = 6.53 MJ.

The energy transferred to water will be used to raise its temperature. The amount of heat required to raise the temperature of a specific amount of water by a certain temperature difference is given by the formula Q = mcΔT where Q is heat, m is mass, c is specific heat capacity, and ΔT is the temperature difference. We know Q, m and c (specific heat capacity of water is 4.186 kJ/kgK), so we can solve for ΔT, the temperature rise, ΔT = Q / (m * c).

Thus ΔT = 6.53 * 10^6 kJ / (128 kg * 4.186 kJ/kgK) = 12.3 K (or °C), so the final temperature T = initial temperature + ΔT, which is 19.4°C + 12.3°C = 31.7°C.

Learn more about Heat Transfer here:

https://brainly.com/question/13433948

#SPJ4

Thanks for taking the time to read The amount of energy released by burning a fuel source measured in energy per mass is called the fuel value If all of the energy. We hope the insights shared have been valuable and enhanced your understanding of the topic. Don�t hesitate to browse our website for more informative and engaging content!

Rewritten by : Barada