객관식
Which of the following shows the correct formula for converting temperature from kelvins to degrees Celsius?
104
views
1. Intro to General Chemistry
Temperature
Multiple Choice
At what temperature is the reading on the Fahrenheit scale exactly twice the reading on the Celsius scale?
A
100 °C
B
212 °C
C
160 °C
D
80 °C
검증된 단계별 안내1
Let the temperature in Celsius be represented by \(C\) and the temperature in Fahrenheit be represented by \(F\).
Recall the conversion formula between Celsius and Fahrenheit: \(F = \frac{9}{5}C + 32\).
According to the problem, the Fahrenheit temperature is exactly twice the Celsius temperature, so set up the equation: \(F = 2C\).
Substitute \(F\) from the conversion formula into the equation: \(\frac{9}{5}C + 32 = 2C\).
Solve the equation for \(C\) by isolating \(C\) on one side: \(\frac{9}{5}C + 32 = 2C \implies 32 = 2C - \frac{9}{5}C = \left(2 - \frac{9}{5}\right)C\).
Related Videos
Related Practice
