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390g is 13.8 (13.757) ounces.

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How many moles are in a 78.56 g sample of nitrogen?

To find the number of moles in a sample, divide the mass of the sample by the molar mass of the substance. The molar mass of nitrogen is approximately 14 g/mol. Therefore, in a 78.56 g sample of nitrogen, there are 78.56 g / 14 g/mol ≈ 5.611 moles of nitrogen.


How many grams of n are in 34.0g of n20?

To find the grams of nitrogen (N) in 34.0g of N2O, you need to consider the molar mass of N2O (44.02 g/mol) where 28.02 g out of 44.02 g is nitrogen. Therefore, in 34.0g of N2O, there are 34.0g * (28.02g/44.02g) = 21.6g of N.


How many moles of N are in 0.245g N2O?

[ 217(g) / 44.013(g/mol) ] * 2(molN/molN2O) = 9.86 mol NDivide mass (g) by molar mass (g/mol) to get moles of N2O, this should be multiplied by 2 for the stoechiometric factor of atoms N per molecule N2O.


Is N½ g 3H½ g æ 2NH¾ g entropy positive or negative?

The reaction is 2NH₃(g) → N₂(g) + 3H₂(g), and since the number of moles of gas decreases from 2 moles to 4 moles, the entropy change is negative.


How many moles of nitrogen N are in 83.0 g of nitrous oxide?

To determine the number of moles of nitrogen (N) in 83.0 g of nitrous oxide (N2O), you first need to calculate the molar mass of N2O (nitrous oxide). Molar mass of nitrous oxide (N2O) = 44.02 g/mol. The molar mass of N in N2O is 28.01 g/mol. Therefore, for every mole of nitrous oxide (N2O), there is 2 moles of nitrogen. Using the molar mass ratio, you can calculate the moles of nitrogen in 83.0 g of nitrous oxide.