In relation to the earth's surface, explain where rock spend most of there time.

17. Which solution is more concentrated? Solution 1: 500 mL of water 100 g of salt Solution 2: 500 mL of water 90 g of salt

Why are nonvascular plants found in moist enviroments?

Which element has both metallic and nonmetallic properties? (1) Rb (3) Si (2) Rn (4) Sr

Below is the equation of sucrose and sulfuric acid-producing carbon, water vapor and sulfur dioxide. C12H22O11 (s) + H2SO4 (aq) + 1/2 O2 (g) → _C (s) + CO2 (g) + 12H2O (g) + SO2 (g) What coefficient of _C (s) would balance this equation?

A 2.5600 gram sample of a sulfur-containing compound is analyzed by precipitating the sulfur as BaSO4. If 1.1756 g of BaSO4 are obtained, what is the percentage of sulfur in the sample?

The weighted average atomic mass of an element depends upon the a. relative abundance of protons in the element b. mass and relative abundance of each isotope of that element c. mass and relative abundance of each neutron of that element d.

What part of an atom do we change for isotopes

The Safe Drinking Water Act (SDWA) sets a limit for mercury-a toxin to the central nervous system-at 0.002 mg/L. Water suppliers must periodically test their water to ensure that mercury levels do not exceed 0.002 mg/L.

The smallest unit of an element is a blank

How many sodium atoms will create an ionic bond with sulfur?