Favorite Answer. Valium -- find the molar mass. (b) 14 amu Hint: Atomic mass of Nitrogen is 14.00674 grams. In imprecise terms, one AMU is the average of the proton rest mass and the neutron rest mass. One formula unit of sodium chloride (NaCl) would weigh 58.44 amu (22.98977 amu for Na + 35.453 amu for Cl), so a mole of sodium chloride would weigh 58.44 grams. Therefore, gram atomic mass of nitrogen atom = 14 g ( since, atomic mass of nitrogen = 14u) Mass of one mole of an atom equal to gram atomic mass of atom . The carbon-12 (C-12) atom has six protons and six neutrons in its nucleus. The isotopes hydrogen-1 and hydrogen-2 make up nearly all of the hydrogen found in nature. (6.022x10^23 molecules/1 mol)(1.79 mols TNT)(3 atoms N/1 molecule) = x atoms N Calculators are a wonderful thing. An atomic mass unit (symbolized AMU or amu) is defined as precisely 1/12 the mass of an atom of carbon-12. O is 16 grams/mole, and 16 amu/molecule. To calculate the mass of a single atom, first look up the atomic mass of carbon from the periodic table. Answer Save. Caffeine has a molecular weight of 194. Relevance. 2 Answers. Because the atomic mass of hydrogen is 1.0079 amu, what can be concluded about the two isotopes? It is equal to 1 mole of Nitrogen atoms. It's only the units that change. It contains about 30% by mass of nitrogen. The molar mass of nitrogen (N) is approximately 14.01 grams per mole of nitrogen atoms. Which of the following represents 1 amu? O2 is 32 g/mole because there are 2 of them. Anonymous. A compound of Mg contains 6% Mg by mass. This number, 12.01, is the mass in grams of one mole of carbon. Therefore, mass of one mole of nitrogen = 14g N = nitrogen nitrogen has an atomic mass of 14.00674 amu Hope this helps :) ... each with a mass of about 16 AMU and 1 carbon atom with a mass of about 12 AMU for a total mass of 44. An amu is defined as exactly $$1/12$$ of the mass of a carbon-12 atom and is equal to 1.6605 $$\times$$ 10 −24 g. Protons are relatively heavy particles with a charge of 1+ and a mass of 1.0073 amu. Round to the 5es001-1.jpg decimal place. The nuclear binding energy of one nitrogen-14 atom is … (a) Mass of a C – 12 atom (b) Mass of a hydrogen atom (c) $$\frac { 1 }{ 2 }$$th of the mass of a C – 12 atom (d) Mass of O – 16 atom Answer: (c) 1 / 12th of the mass of a C – 12 atom Hint: By definition 1 amu is defined as precisely 1 / 12th the mass of an atom of carbon – 12. The mass of an atom of hydrogen-1 is 1.0078 amu, and the mass of an atom of hydrogen-2 is 2.0141 amu. I would like if you could show the work so I can see where I'm going wrong. Question 5. Which of the following represents 1 amu? Thus, since the atomic mass of iron is 55.847 amu, one mole of iron atoms would weigh 55.847 grams. The mass of a proton is 1.00728 amu, and the mass of a neutron is 1.00866 amu. The same concept can be extended to ionic compounds and molecules. The mass of one atom is usually expressed in atomic mass units (amu), which is referred to as the atomic mass. Molar mass is the quantity of an element in grams for every one mole of atoms of that element. The number of atoms of nitrogen in one molecule of it is m. A mole, or mol for short, is a quantity of any given thing that is equal to 6.02214 * 10^23 particles. The mass defect of nitrogen-14 is __ amu. The mass of a nitrogen-14 atom is 14.00307 amu. Uumm, the amu weight (molar mass) ARE THE SAME. What is the mass of a single nitrogen atom in grams? So, answer (b) is correct. Gram atomic mass of an element is the amount of that element in grams whose quantity is equal to atomic mass of that element. Numerically, it's the same as the element's atomic mass in units of amu (atomic mass units). Minimum molar mass of the compound is n × 1 0 2 g/mol. 9 years ago. 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