What percent of the earth's surface water is fresh water?

Carbon is found in all known forms of life. Which statement best describes why carbon is uniquely suited to forming macromolecules such as those found in living organisms? A. Carbon forms large compounds that are not chemically reactive. B.

Which element is the most reactive? A. sodium B. nickel C. carbon D. oxygen

At room temperature the electrical conductivity and the electron mobility for aluminum are 3.8 * 107 (Ω∙m) - 1 and 0.0012 m 2/V∙s, respectively. (a) Compute the number of free electrons per cubic meter for aluminum at room temperature.

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

Why is pure water neutral

What volume will 12.0 g of oxygen gas occupy at 25 c and a pressure of 52.7 kpa?

Identify the atom represented by this electron configuration and elaborate on its bonding properties. 1s22s22p63s23p64s13d5 a. manganese is a transition metal that can form up to five stable ionic bonds. b.

What percent of the earth's surface water is fresh water?

You heat 3.869 g of a mixture of fe3o4 and feo to form 4.141 g fe2o3. What is the mass of oxygen reacted?

What kind of waves do cellar telephones use to transmit amend recive signals