Express (a) 275^∘ C in K ; (b) 25.55 K in ^∘ C ; c )-47^∘ C in ^∘ F ; (d) 100.0^∘ F in K.

Name: Problem 53, Chapter 1: Chemistry
Uploaded: 2021-09-24T09:51:35-08:00
Duration: 2 min 15 s
Channel: Aadit Sharma
Description: Express (a) 275^∘ C in K ; (b) 25.55 K in ^∘ C ; c )-47^∘ C in ^∘ F ; (d) 100.0^∘ F in K.

step 1 Option A, we convert Celsius which is 275 degrees Celsius. We add 273 to convert it into Kelvin.

Express (a) 275^∘ C in K ; (b) 25.55 K in ^∘ C ; c )-47^∘...

Express (a) $275^{\circ} \mathrm{C}$ in $\mathrm{K} ;$ (b) $25.55 \mathrm{~K}$ in ${ }^{\circ} \mathrm{C} ;$ c $)-47^{\circ} \mathrm{C}$
in ${ }^{\circ} \mathrm{F} ;$ (d) $100.0^{\circ} \mathrm{F}$ in $\mathrm{K}$.

Key Concepts

Temperature Scales

Temperature scales are systems for measuring temperature. The Kelvin scale is an absolute temperature scale beginning at absolute zero, where no thermal energy remains, whereas the Celsius and Fahrenheit scales are relative scales defined by fixed points such as the freezing and boiling points of water. These differences in reference points and interval sizes necessitate specific conversion methods between them.

Conversion Formulas

Conversions between temperature scales are achieved using linear equations that incorporate both a scaling factor and an offset. For example, converting from Celsius to Kelvin involves adding 273.15 (K = °C + 273.15), while converting between Celsius and Fahrenheit requires both multiplication by 9/5 and the addition or subtraction of 32 (°F = °C × 9/5 + 32, °C = (°F - 32) × 5/9). These formulas are essential for moving accurately from one temperature unit to another.

Absolute and Relative Temperature Measurement

Understanding the difference between absolute and relative temperature measurement is crucial. The Kelvin scale, being absolute, directly relates to the thermal energy of a system with zero Kelvin representing the lowest possible energy state. In contrast, Celsius and Fahrenheit are relative scales that rely on chosen reference points, which means that conversions between them must account not only for differences in scale increments but also for differing zero baselines.

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