1. How many particles are in 4.5 mol of CO2? 2. How many grams are in .07 mol of Ba(CN)2?
3. How many moles are in 406 grams of GeF4?
4. What is the mass of 3.5 x 1023 atoms of Sc?
5. How many particles are in 2.40 grams of methane (CH4)?
(SHOW ALL YOUR WORK)

Covalent bonds generally form when the bonded elements have a difference in electronegativity less than 1.5. subtract the electronegativities for the following pairs of elements and predict whether they form a covalent bond. electronegativity difference of c and c: ionic covalent electronegativity difference of mg and cl: ionic covalent