For each pair below, select the sample that contains the largest number of moles.

Pair A

2.50 g O2

2.50 g N2

A carbon-carbon double bond has a greater bond energy than a carbon-carbon single bond. Because of the greater bond energy, a carbon-carbon double bond is and than a carbon-carbon single bond.

Identify which of the concentration expressions can also be used to describe a solution with a concentration of 1 mg/mL of solute. Assume the density of the solution is 1.00 g/mL

Is erasing a pencil mark a chemical or physical change?

Sub atomic particle mass

What's the oxidation number for NH3?

If EG = 19 and FG = 12 then EF = ?

Given the following reaction: 4Fe + 302 → 2Fe2O3 How many grams of Fe2O3 will be produced from 24.0 g of Fe and 5.00 g of O2? grams (round to three significant figures)

Which Group 16 element combines with hydrogen to form a compound that has the strongest hydrogen bonding between its molecules? 1. oxygen 2. selenium 3. sulfur 4. tellurium

How many hydrogen atoms are in 2.80 mol of ammonium sulfide?

What is a large oval structure that directs all of the cells activities?