Can you identify Na O2?
How many grams of oxygen gas are required to react completely with 14.6 grams of solid sodium to form sodium oxide?
What is the percent yield for the reaction of 3.74 g of Na and excess O2 if 5.34 g of Na2O2 was recovered in the laboratory?
First you need to find the theoretical yield for the reaction: 2Na + O2 ---> Na2O2 (1) find the theoretical yield of 3.74 g of Na, i.e. if all of the Na is reacted 3.74 g Na *(1 mol Na/22.99 g Na)*(1 mol Na2O2 formed/2 mol Na reacted)*(77.98 g Na2O2/1 mol Na2O2) = 6.34 g Na2O2 (2) % yield = (actual yield / theoretical yield)*(100%) % yield = (5.34 g / 6.34 g) *(100%) =…
What should you do if shipping papers are not available when trying to identify a hazardous material?
Molar weight of oxygen (O2), Mw = 2x16 = 32 g/mol The number of molecules in one mol of O2 is equal to avogadro's number, Na = 6.022x10^23 molecules per mol of O2. The number of molecules per gram of O2 is then equal to the number of molecules per mole of O2 divided by the molar weight of O2, Nw = 6.022x10^23/32 = 1.882x10^22 molecules per gram O2. For 8 grams of O2 the…