# atomic mass of magnesium

## atomic mass of magnesium

asked Nov 5, 2017 in Chemistry by jisu zahaan ( 29.7k points) How do you calculate the average atomic mass of magnesium, given the following percent abundances and isotopic masses: #78.99% .^24Mg (23.98504 u)#, #10.00% .^25Mg (24.98584 u)#, and #11.01% .^20Mg (25.98259 u)#? In chemistry, the formula weight is a quantity computed by multiplying the atomic weight (in atomic mass units) of each element in a chemical formula by the number of atoms of that element present in the formula, then adding all … Name: Magnesium Symbol: Mg Atomic Number: 12 Atomic Mass: 24.305 amu Melting Point: 650.0 °C (923.15 K, 1202.0 °F) Boiling Point: 1107.0 °C (1380.15 K, 2024.6 °F) Number of Protons/Electrons: 12 Number of Neutrons: 12 Classification: Alkaline Earth Crystal Structure: Hexagonal Density @ 293 K: 1.738 g/cm 3 Color: grayish Atomic Structure (i) Use this information to calculate the average relative atomic mass of magnesium. This is a list of chemical elements, sorted by atomic mass (or most stable isotope) and color coded according to type of element.Each element's atomic number, name, element symbol, and group and period numbers on the periodic table are given. What is the average atomic mass of Mg to 4 significant figures. Calculate the number of moles of magnesium present in a magnesium ribbon weighing 12 g. Molar atomic mass of magnesium is 24g mol–1. ››More information on molar mass and molecular weight. (c) Three isotopes of magnesium (magnesium-24, magnesium-25 and magnesium-26) are found naturally in the environment in the proportions of 78.6%, 10.1% and 11.3%, respectively. So 4.03594014 * 10^-23 "grams" Here are some prefined values. m = mass = "g" M = molar mass = "g"/("mol") A = Avagadro's Constant = (6.02214086*10^23"particles")/"mol" "mass ... What is the mass of one atom of magnesium in grams? Please show your solution. The element consist of 78.99% Mg atoms with actual mass =(23.99u) + 1.00% MG atoms with mass =(24.99u) 11.01% Mg atoms with mass = (25.98u). Chemistry Measurement Unit Conversions. (Show all of your working and give your answer to one decimal place.)

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