Molar mass Study guides, Class notes & Summaries

How does the number of molecules in 1 molecules of oxygen compare with the number of molecules in 1 molecules of nitrogen? Each sample has the same number of molecules. Magnesium and iron are metallic elements. How does a mole of magnesium compare with a mole of iron? They both have the same number of atoms. Which is the formula mass of (NH4)2SO4? 132.17 amu What is Avogadro's number? the number of atoms, molecules, ions, formula units, or other particles in a mole of a...

Which is the molar mass of H2O? 18.02 g/mol What is the molar mass of CHCl3? 119.37 g/mol Which best compares 1 mol of sodium chloride to 1 mol of aluminum chloride? Both are made up of 6.02 x 10^23 formula units. Which is the formula mass of (NH4)2SO4? 132.17 amu What is the molar mass of a substance? the mass in grams of one mole of a substance How does the number of molecules in 1 mol of oxygen compare with the number of molecules in 1 mol of nitrogen? ...

Student Exploration: Moles Vocabulary: atomic mass, Avogadro constant, conversion factor, dimensional analysis, mole, molar mass, molecular mass, scientific notation, significant figures, unified atomic mass unit Prior Knowledge Questions (Do these BEFORE using the Gizmo.) 1. In the image to the right, note a dozen eggs, a dozen donuts and a dozen roses. How many of each item do you have? 2. Would a dozen of each object have the same mass? 3. Suppose you have a dozen carbon atoms, a dozen...

Activity: Moles, Avogadro, and Molar Mass

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LMR Molar Mass Review B 2022 (show all work) 1.FIND THE MOLAR MASS OF a) Na2S Na 23.0 46.0 S 32.1 32.1 = 78.1 or 78 g b) Li2SO4 Li 6.94 13.88 S 32.1 32.1 O 16.0 64.0 = 109.98 or 110.0 g 2.CALCULATE THE MOLAR MASS OF a) ALUMINUM CHLORIDE Al3+ + Cl-1 = AlCl3 Al 27.0 27.0 Cl 35.5 106.5 = 133.5 or 134 g