Question

using the formula provided, convert kelvin to celsius
#°k - 273.15 \t step 1: subtract 273.15

1. 273.15°k
2. 773.15°k

day 2
for the following scenarios, you need to:

1. identify if the phase change is condensation, melting, freezing, or evaporation
2. describe how the molecules move before and after the phase change (solid = moving in place, liquid = moving around each other, gas = moving away from each other)

1. a popsicle takes in energy and changes into a liquid

1. water boils in a pot and vapor can be seen

1. ice sitting on the road takes in sunlight and becomes a liquid

Explanation:

Question 17: Convert 273.15 K to Celsius

Step 1: Apply the Kelvin to Celsius formula

The formula to convert Kelvin to Celsius is \( ^\circ\text{C} = ^\circ\text{K} - 273.15 \). Substitute \( ^\circ\text{K} = 273.15 \) into the formula.
\( 273.15 - 273.15 \)

Step 2: Calculate the result

\( 273.15 - 273.15 = 0 \)

Step 1: Apply the Kelvin to Celsius formula

Using the formula \( ^\circ\text{C} = ^\circ\text{K} - 273.15 \), substitute \( ^\circ\text{K} = 773.15 \).
\( 773.15 - 273.15 \)

Step 2: Calculate the result

\( 773.15 - 273.15 = 500 \)

A popsicle is a solid. When it takes in energy and becomes a liquid, this is melting (solid to liquid). Before (solid), molecules move in place. After (liquid), molecules move around each other.

Answer:

\( 0^\circ\text{C} \)

Question 18: Convert 773.15 K to Celsius