The reaction of 2h2+o2-->2H2o + heat is

A exothermic

B catalyze

C liquid reaction

D endothermic

E none

What is the best definition of low electromagnetic energy? A. Low electromagnetic energy has long wavelengths and low frequency. B. Low electromagnetic energy has long wavelengths and high frequency. C.

Assign oxidation numbers to each atom in KBrO4

Ok so this is kind of a weird question so ... yeah. Anyway, I'm homeschooled but all my friends are getting ready for homecoming and I'm like I want to go to homecoming but I can't because ... I'm homeschooled.

What does scientific methodology involve

The vapor pressure of 25 milliliters of water at 25 degrees celcius will be the same as

Is it ever possible to extract 100% of a compound from a solution? Why or why not?

Covalent, ionic, and metallic are the three types of attraction between atoms.

A red blood cell has a round structure. A muscle cell has a long, thin structure. Which statement best explains why these two types of cells have different structures

Does oxidation cause misfolding of protein

A solution is a homogenous mixture of solute and solvent. There are different types of solutions. A carbonated drink is an example of a solution where the solute is a gas and the solvent is a liquid.