The discussion centers on calculating the number of moles and mole fractions of oxygen and nitrogen in 1 kg of air. The calculations provided indicate that there are approximately 14.5 moles of oxygen (from 232 grams) and about 54.83 moles of nitrogen (from 768 grams). The molar mass of molecular oxygen (O2) is 32 grams per mole, while that of nitrogen (N2) is 28 grams per mole. Participants emphasize the importance of understanding molecular weights and correct calculations to derive accurate results.
PREREQUISITESChemistry students, educators, and professionals involved in chemical analysis or environmental science will benefit from this discussion, particularly those focusing on gas composition and stoichiometry.
L really have no idea that's why l asking you guys.Chestermiller said:In the 1 kg of air, how many moles of oxygen are there? How many moles of nitrogen are there? What is the mole fraction of oxygen? Of nitrogen?
14.50054377039141 moles (oxygen) 232 g of oxygenBorek said:232 grams of oxygen is how many moles?
do l need to just add these together to get the result?draikens said:14.50054377039141 moles (oxygen) 232 g of oxygen
54.830902353873405 moles (nitrogen) 768 g of nitrogen
14.50054377039141 moles (oxygen) 232 g of oxygenChestermiller said:In the 1 kg of air, how many moles of oxygen are there? How many moles of nitrogen are there? What is the mole fraction of oxygen? Of nitrogen?
Wrong. How many atoms are there in molecular oxygen? In molecular nitrogen? What is the molar mass of an oxygen molecule? Of a nitrogen molecule?draikens said:14.50054377039141 moles (oxygen) 232 g of oxygen
54.830902353873405 moles (nitrogen) 768 g of nitrogen
molar mass for oxygen is 16Chestermiller said:Wrong. How many atoms are there in molecular oxygen? In molecular nitrogen? What is the molar mass of an oxygen molecule? Of a nitrogen molecule?
Wrong. Molar mass of O2 is?draikens said:molar mass for oxygen is 16
molar mass for nitrogen is 14