# Atomic mass unit

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to see which equation is correct. I have used the book Chemistry 1 by OCR as my reference. Relative Atomic Mass: This is the mass of an atom of the element relative to the mass of an atom of carbon-12 which has a mass of exactly 12. Relative Molecular Mass: This is the mass of a molecule of a compound relative to an atom of carbon-12. Mole: This is the unit of an atom of

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Item Mass (g) Crucible & Lid 16.96g Mystery Hydrate Crystals 4.40g Crucible & Lid & Mystery Hydrate Crystals after 1st Heating 19.17g Crucible & Lid & Mystery Hydrate Crystals after 2nd Heating 19.17g Interprets and analyzes data Calculations Molar Mass MgSO4 Atomic mass of Mg + Atomic mass of S + Atomic mass of O * 4 = Molar mass of MgSO4 24.31u + 32.07u + 64.00u = 120.38u MgSO4 · 5H2O Molar mass of MgSO4 + Atomic mass of H * 10 + Atomic mass of O * 5 = Molar mass of MgSO4

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which 2 molecules of one substance react with 1 molecule of another for instance the formation of water: 2H2 + O2 2H2O, 2 moles of hydrogen molecules will react with 1 mole of oxygen molecules to give 2 moles of water molecules. For an element, the mass

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by Relative Formula Mass (RFM)? - Relative Formula Mass is the scientific measurement that is used to measure the mass of one atom of an element. Carbon is the standard atom for RFM, Carbon has a relative atomic mass (Ar) of 12. How is Relative Formula Mass calculated? - Relative Formula Mass is calculated in a compound by adding up the numbers of atoms in the formula and using the relative mass of each atom to calculate the total mass for each element and add up the total mass of the compound to

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difference I’m tempature it could spark a new way to do things in this economic system we have. Footnote – substance Is the molecular weight in grams. Molar Mass is basically in grams per mole for example salt has a molar mass of 5.8g per mole. The mass of an element refers to 6.0221415x1023 molecules of the substance. Molar Mass helps us figure out how many grams per mole we need to do this project and it helps us know how much we need to put into the solution. If you don’t Find

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Israel Science and Technology Homepage Home Search About Contact Bookmark Sort List By Atomic Number Atomic Weight Name Symbol Periodic group, Electron configuration Melting point Boiling point Density Ionization energy Abundance in Earth Year of discovery Hebrew Name List of Periodic Table Elements Sorted by Atomic Number Click a column title, such as Symbol, to sort the table by that item. No. Atomic Weight Name Sym. M.P. ( °C ) B.P. ( °C ) Density* (g/cm3) Earth crust (%)* Discovery (Year)

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periodic table, which showed that the properties of chemicals recur periodically. However, both periodic tables sorted the elements in order of increasing atomic mass. This, along with the discovery of the noble gasses made several errors in repeating periods, one being argon and calcium. In 1913, H. G. J. Moseley ordered these elements in increasing atomic number, fixing the error. In the periodic table, horizontal lines of elements are called periods and vertical lines are called groups. Elements in the

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Relative Atomic Mass of Lithium Evaluation: In general the accuracy of the experiments was good. However with practice, the accuracy could be improved; accuracy being how close the results are to the real answer. I think I have carried pit the experiment as well as I possibly could at the time with the given conditions and time period allowed. I have gained precise results from the practical. However, looking back at the analysis section, the relative atomic mass

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according to atomic weight, the smallest weight would have the least significant reaction or mildest property, whilst the heaviest would have the most significant or strongest property. Further, the atomic weight of the middle element would be almost exactly the average of the two other elements. These properties were considered too coincidental not to be of some significance. One of the first triads to be observed was

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the actual masses of the elements could not be measured so instead they compared them with the mass of hydrogen, or the relative atomic mass. Firstly in 1862 Alexandre Beguyer de Chancoutois arranged the elements into a three-dimensional form of classification called the telluric screw. The telluric screw plotted the elements on the outside of a cylinder where one complete turn corresponded to an atomic weight increase of 16. This resulted in curtain elements appearing on the same vertical line as

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