Is heating sulfur and copper a physical or chemical change?

What is relative humidity of air filled to half its capacity?

If two elements are in the same column what do they have in common

The most dangerous driving situation, and the one which produces car crashes daily is?

Wood burning in fire

Is the following chemical equation balanced? 2Na + 2H2O ⇒ 2NaOH + H2 yes no

If the temperature is constant what change in volume would cause the pressure of an enclosed gas to increase by a factor of 4

For the reaction of carbon with carbon dioxide to make carbon monoxide, one set of conditions produced a Kc = 1.2 * 10-1. At equilibrium at a certain temperature, the concentration of product was 0.60 M.

Water is a colorless and odorless liquid. It can exist in solid, liquid, and gas states. It boils at 100 degrees C and melts at 0 degrees C. Which option best describes this information? A. These are the physical properties of water. B.

What can happen to a supersaturated silution?

What is the source for georthermal energy