Websing the average atomic masses for each of the following elements (see the table inside the cover of this book), calculate the mass (in amu) of each of the following samples. l type='a'> 125 carbon atoms 5 million potassium atoms 1.041022 lithium atoms 1 atom of magnesium 3.0111023 iodine atoms WebExpert Answer. Moles of Li = Mass of Li/Molar Mass of Li The molar mass of Li is …. View the full answer. Transcribed image text: Calculate the number of atoms in a 5.08 x 10' g sample of lithium. number of atoms:
How many atoms are present in 5 grams of hydrogen? - Quora
WebProblem: Convert 25.0 grams of KMnO4 to moles. Solution: Find out the molar mass of the substance (hint: you can use Molar mass of the substance alone to calculate molar mass). The molar mass of KMnO4 is 158.032 g/mol. Divide the given mass (25.0 g) by the molar mass (158.032 g/mol) to get the moles. The number of moles of KMnO4 will be 0.158 WebChemistry Chemistry questions and answers How many atoms are in each of the following substances? 5.20 g P 2.28 g Hg 1.80 g Bi 8.8*10^-2 g Sr This problem has been solved! You'll get a detailed solution from a subject matter expert … crystal star earrings
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WebHow many atoms are there in each of the following substances? 5.08 g P use periodic table atomic mass=30.97 5.08/30.97*6.02x10^23 =9.88x10^22 Ionic compound Made of metals AND nonmetals (Pt02, Pb (NO3)2) Molecular compound Made of JUST nonmetals (SO3, CO, HCN) Systematic name for NaNO3 sodium nitrate Systematic name for Co2 (SO4)3 WebMay 29, 2016 · Now, in order to find the number of atoms of hydrogen you have in your sample, you must use the fact that one water molecule is made up of 1 atom of oxygen and 2 atoms of hydrogen This means that your sample will contain 3.343 ⋅ 1023 molec. H2O ⋅ 2 atoms of H 1molec. H2O = 6.7 ⋅ 1023atoms of H I'll leave the answer rounded to two sig … WebApr 15, 2024 · 1 Answer marfre Apr 15, 2024 1.227 × 10−6 g of gold Explanation: 1 mole = 6.022 ×1023 atoms Gold's (Au) molar mass from the Periodic table is "196.966" g/mol Using dimensional analysis: 3.75 ×1015 atoms Au × 1mol 6.022 × 1023 atoms Au × 196.966 g 1mol = 3.75(196.966) 6.022 × 1015−23 = 122.654× 10−8 = 1.227 ×10−6 g Au Answer link crystal stardew