4. The mass of a single proton is approximately 1.67 x 10-27 kg. The mass of an electron is

approximately 9.11 x 104 kg. How many times bigger is a proton than an electron?

Ions blowing outward from the sun (two words)

The ionization constant for water (kw) is 9.311 * 10-14 at 60 °c. calculate [h3o+], [oh-], ph, and poh for pure water at 60 °c.

If one species in a community does out or moves, the community will A) be affected. B) stop working. C) not be affected. D) replace the species.

2. To what volume will you have to dilute 20.0 ml of a 8 M HCl solution to make a 0.35 M HCI solution?

Compared to an atom c-12, an atom of c-14 has a greater

Hf is a stronger acid than nh + 4. which base would be stronger: f - or nh3? 1. f - 2. both bases would be equal in strength. 3. nh3 4. cannot tell from the information given. 5. neither f1 - nor nh3 would be bases.

The concentration of commercially available concentrated nitric acid is 70.0 percent by mass, or 15.9 M. Calculate the density and molality of the solution.

Whats 2 properties of iron?

Which light packs the highest energy per photon

Which of the following hydrocarbons will most likely be found around cows?