Oxygen and hydrogen particles are kept in a container. Which of the following accurately describes diffusion of these gases

How are physical and chemical different

What type of reaction absorbs heat from the surrounding environment? A. Endothermic B. Exothermic C. Heterothermic D. Homothermic

What happens when you mix dish washer detergent with pine-sol?

An 80.0g sample of an unknown metal is at an initial temperature of 55.5oC. Afer 540 J of energy is absorbed by the metal, the temperature of the metal increasese to 81.75oC.

Which atom (s) in the molecule CH3OCH3 will display tetrahedral electron-pair geometry? (Select all that apply) a. Ob. Cc. Hd. none of the above

How many chemical bonds do you expect ekasilicon to have and why

Express the rate of reaction in terms of the change in concentration of each of the reactants and products. 2A (g) → B (g) + C (g)

A type of element that has some of the properties of metals and some of nonmetals is called a

DDT is: A. banned in the United States B. still being used in other countries C. to blame for the near extinction of some bird species D. all of the above

7) Sodium is much more apt to exist as a cation than chlorine because: a) chlorine is a gas and sodium is a solid b) chlorine has a greater electron affinity than sodium c) chlorine is bigger than sodium d) chlorine has a greater ionization energy