#1)What is the formula weight of cobalt(II) fluoride?Answer in units of g/mol.#2) Nitrogen combines with oxygen in the atmosphere during lightning flashes to form nitrogen monoxide (NO) which then reacts furtherwith O2 to produce nitrogen dioxide (NO2).What mass of NO2 is formed when NOreacts with 214 g of O2?How much NO is required to react with thisamount of O2?Answer in units of g.
The formula weight is the weight of the molecule or compound. The (II) tells us that Cobalt will have a +2 charge. To balance the charge of the ion, we will need two Fluorines (both with a -1 charge). Take the atomic weight from the periodic table of each constituent atom, and you will find your answer.
For question number two, begin with a balanced equation. I wrote both equations, although the first one is not necessary to solve the problem. Sometimes it helps just to see what's happening.
Use the balanced equation describing the desired reaction (NO with O2 to produce NO2) and solve using stoichiometry.