For the reaction I2(g) → I2(s), ΔH° = -62.4 kJ at 25°C. Based on these data, at 25°C A) ΔH°vap = -62.4 kJ/mol.
B) ΔH°vap = 62.4 kJ/mol.
C) ΔH°sub = -62.4 kJ/mol.
D) ΔH°sub = 62.4 kJ/mol.

The speed of light is around 6.706×10^8 miles per hour. what is the speed of light in units of miles per minute?

Suppose you have designed a new thermometer called the x thermometer. on the x scale the boiling point of water is 129 ? x and the freezing point of water is 13 ? x. part a at what temperature are the readings on the fahrenheit and x thermometers the same?

What happened to the amount of carbon dioxide in the atmosphere from 2010–2017?