Nitrogen has an average Atomic Mass of about 14 while hydrogen has an average atomic mass of about 1, so the total molecular mass of NH3 is about 17. From this we find that the mass percentage of N in NH3 is about 14/17 = 82%. To get more precise numbers, look up the exact atomic masses from a Periodic Table.
NH3 which is ammonia has the highest percentage by mass of nitrogen.
the molecular mass number of NH3 = 17 atomic mass no.of N=14 x 1 atom (present in the compound)=14 atomic mass of H= 1 x 3 atoms (present in compound)=3 thus, molecular mass= atomic mass of N+ atomic mass of H3 = 14 + 3 = 17
The mass percentage of N in HNO3 is 22,22 %.
74.168 u NH3Determine relative mass of NH3 molecule: (1 x 14.007 u N) + (3 x 1.008 u H) = 42.357 uMultiply the number of molecules of NH3 by its relative molecular mass.1.751024 molecules NH3 x (42.357 u NH3)/(1 molecule NH3) = 74.168 u NH3
17 g/mol is the molecular mass of ammonia NH3.
NH3 which is ammonia has the highest percentage by mass of nitrogen.
Molecular mass = sum of all atoms masses = 1(molN/mol NH3)*14.01(g/mol N) + 3(molH/mol NH3)*1.008(g/mol H) = 17.03 g/mol NH3
82.4% N and 17.6% H
the molecular mass number of NH3 = 17 atomic mass no.of N=14 x 1 atom (present in the compound)=14 atomic mass of H= 1 x 3 atoms (present in compound)=3 thus, molecular mass= atomic mass of N+ atomic mass of H3 = 14 + 3 = 17
The mass percentage of N in HNO3 is 22,22 %.
74.168 u NH3Determine relative mass of NH3 molecule: (1 x 14.007 u N) + (3 x 1.008 u H) = 42.357 uMultiply the number of molecules of NH3 by its relative molecular mass.1.751024 molecules NH3 x (42.357 u NH3)/(1 molecule NH3) = 74.168 u NH3
17 g/mol is the molecular mass of ammonia NH3.
Atomic mass of NH3 is 17.So there are 1.353mol.
You can find the mass of one mole of each of the individual elements by looking at the mass numbers.So, 1 mole of:N=14gH=1gsince there are 3 H's the total mass of 1 mole NH3 is 14+3=17gYou then multiply the actual number of moles by the g's per mole:=> 17x2.11=35.87g
NH3-N is not a formula. It is an expression of Ammonia lab testing. 10 mg/L NH3-N means there are 10 mg/L Nitrogen in sample solution due to NH3. In water, you can find NO3-N, NO2-N, NH4-N, etc. With the same definition as above, i believe you know what the meaning of them all.
Most certainly MASS-percentage (%m/m) is meant:NH3 contains 14/17 = 82.4%(m/m) NitrogenNH4NO3 contains 2*14/80 = 35.0%(m/m) NitrogenIf, however, number of N atoms compared to total atoms are involved:NH3 contains 1/4 = 25% Nitrogen atomsNH4NO3 contains 2/9 = 22.2% Nitrogen atomsSo in both cases there is more (%) N in NH3 than in NH4NO3
You first need to find the mass weight of NH3. wt. of N + (wt. of H)= 14.0067 + 3(1.0067)= 17.03052 Now that you have the mass weight, you divide 15 into 17.03052... 15.0/17.03052 = 0.8807 moles in 15. g of NH3