Diatomic molecules will be Nonpolar when they are composed of only one element.
Cover with metal .Any elements other than hydrozen and helium concentration shows an absorbance
The third question requires you to solve for the weight of sodium (Na) and weight of Chloride (Cl) from the calculated moles of each element Na, and Cl.
So, you need to multiply the calculated moles of Na with its molar mass (23 g/ mol) to get the answer for Na. And multiply the calculated moles of Cl with its molar mass (35.45 g/mol) to get the answer for Cl.
Li2O.. Because Li is +1 and O2 is -2
The name of the compoud is Dinitrogen pentoxide.