If a combustion reaction is reversed, what needs to happen to the H value?

Sodium metal is quiet soft whereas sodium chloride crystals are quiet hard explain why

Decide which element probably has a density most and least similar to the density of strontium. Comnarina density.

Compare metals, nonmetals, and metalloids based on their physical properties.

2 ClO2 (aq) + 2OH - (aq) → ClO3 - (aq) + ClO2 - + H2O (l) was studied with the following results: Experiment [ClO2] (M) [OH-] (M) Initial Rate (M/s) 1 0.060 0.030 0.0248 2 0.020 0.030 0.00276 3 0.020 0.090 0.00828 a.

True or False. Solutions for which water is the solvent are called aqueous solutions.

What is the best description of refraction? A. Light hitting a shiny surface and bouncing off in the opposite direction. B. Combining red, blue, and green light to make white light. C.

Galaxy includes: choose all that apply. planetsstarsdust interstellar gas dark matter

Why can't copper be changed into gold

Boyle's Law represents the relationship of volume as pressure changes. The constants of Boyle's Law are: a. pressure and number of molecules of gas b. volume and temperature c. pressure and temperature d. temperature and number of molecules of gas e.

What is Tyndall effect? Describe an activity to show that a true solution does not show Tyndall effect