How many atoms of neon is there in 100.78 grams of neon gas at STP? PLEASE show work!

How many grams of co(g) are there in 74.5 ml of the gas at 0.933 atm and 30o c?

Consider the reaction: n2(g) + o2(g) ⇄ 2no(g) kc = 0.10 at 2000oc starting with initial concentrations of 0.040 mol/l of n2 and 0.040 mol/l of o2, calculate the equilibrium concentration of no in mol/l how would this be done?

Jose and eric were given four samples in lab. the results of their analysis are shown in the table. based on the data they collected, which sample is most likely a metal?