How many grams of nitrogen are present in 2 moles of HNO3?
There is 1 mol N in 1 mol HNO3.
1 mol N = 14 g
IF you mean nitrogen gas as in N2, then there are 7 g N2 since there is 1/2 mol N2 in 1 mol N.
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To find the number of grams of nitrogen present in 2 moles of HNO3, you need to know the molar mass of nitrogen and the molecular formula of HNO3.
The molecular formula for HNO3 is made up of one nitrogen atom (N), one hydrogen atom (H), and three oxygen atoms (O). To calculate the molar mass of HNO3, you can sum up the individual molar masses of each element in the formula.
The molar masses are as follows:
- Nitrogen (N): 14.01 g/mol
- Hydrogen (H): 1.01 g/mol
- Oxygen (O): 16.00 g/mol
Now, let's calculate the molar mass of HNO3:
Molar Mass(HNO3) = (1 × Molar Mass(H)) + (1 × Molar Mass(N)) + (3 × Molar Mass(O))
Molar Mass(HNO3) = (1 × 1.01 g/mol) + (1 × 14.01 g/mol) + (3 × 16.00 g/mol)
Molar Mass(HNO3) = 63.02 g/mol
The molar mass of HNO3 is 63.02 g/mol.
Since 2 moles of HNO3 are given, you can now multiply the molar mass of HNO3 by 2 to find the mass of HNO3 in grams:
Mass(HNO3) = 2 moles × 63.02 g/mol
Mass(HNO3) = 126.04 g
Therefore, there are 126.04 grams of HNO3 in 2 moles of the compound.