To calculate the mass of a single atom, first look up the atomic mass of carbon from the periodic table. It contains about 30% by mass of nitrogen. The carbon-12 (C-12) atom has six protons and six neutrons in its nucleus. Gram atomic mass of an element is the amount of that element in grams whose quantity is equal to atomic mass of that element. Favorite Answer. The mass of a proton is 1.00728 amu, and the mass of a neutron is 1.00866 amu. One mole of carbon is 6.022 x 10 23 atoms of carbon (Avogadro's number).This relation is then used to 'convert' a carbon atom to grams by the ratio: A compound of Mg contains 6% Mg by mass. Which of the following represents 1 amu? What is the mass of a single nitrogen atom in grams? An atomic mass unit (symbolized AMU or amu) is defined as precisely 1/12 the mass of an atom of carbon-12. I would like if you could show the work so I can see where I'm going wrong. The nuclear binding energy of one nitrogen-14 atom is … Which of the following represents 1 amu? So, answer (b) is correct. It is equal to 1 mole of Nitrogen atoms. Anonymous. Caffeine has a molecular weight of 194. A mole, or mol for short, is a quantity of any given thing that is equal to 6.02214 * 10^23 particles. In imprecise terms, one AMU is the average of the proton rest mass and the neutron rest mass. The mass of one atom is usually expressed in atomic mass units (amu), which is referred to as the atomic mass. Answer Save. The number of atoms of nitrogen in one molecule of it is m. The same concept can be extended to ionic compounds and molecules. Valium -- find the molar mass. 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. Relevance. Thus, since the atomic mass of iron is 55.847 amu, one mole of iron atoms would weigh 55.847 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 . Because the atomic mass of hydrogen is 1.0079 amu, what can be concluded about the two isotopes? Therefore, mass of one mole of nitrogen = 14g Molar mass is the quantity of an element in grams for every one mole of atoms of that element. 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. (b) 14 amu Hint: Atomic mass of Nitrogen is 14.00674 grams. 9 years ago. (6.022x10^23 molecules/1 mol)(1.79 mols TNT)(3 atoms N/1 molecule) = x atoms N Calculators are a wonderful thing. (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. Round to the 5es001-1.jpg decimal place. The mass of a nitrogen-14 atom is 14.00307 amu. Numerically, it's the same as the element's atomic mass in units of amu (atomic mass units). 2 Answers. The isotopes hydrogen-1 and hydrogen-2 make up nearly all of the hydrogen found in nature. Uumm, the amu weight (molar mass) ARE THE SAME. Question 5. Minimum molar mass of the compound is n × 1 0 2 g/mol. The mass defect of nitrogen-14 is __ amu. It's only the units that change. The molar mass of nitrogen (N) is approximately 14.01 grams per mole of nitrogen atoms. 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. 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