5. Consider the reaction: 2Fe + 302 --> Fe2O3. If 12.5 g of Fe2O3 is produced, how many grams of oxygen are needed? *

Which statement describes covalent bases? they have hydroxide ions. they produce hydrogen ions. they are often amines. they are named the same as ionic compounds.

What is the mass of 0.46 mil of mgcl2

Apiece of metal with a length of 1.42 cm was measured using four different instruments. which of the following measurements is the most accurate?