Your science teacher has given you a triple beam balance, a graduated cylinder and a beaker of water.
Explain how to find the density of an irregular
shaped object such as a small rock.

Which statement best describes the oxidation numbers of the atoms found in magnesium chloride? a. magnesium has a 2- oxidation number and chlorine has a 1+ oxidation number. b. magnesium has a 2- oxidation number and chlorine has a 2+ oxidation number. c. magnesium has a 2+ oxidation number and chlorine has a 1- oxidation number. d. magnesium has a 1+ oxidation number and chlorine has a 1- oxidation number.

What metric units would you use to measure the thickness of a key

Δu of , in kj/kg, as it isto k, (a)as a of , (b) at , (c) at .