Robertavard
01-14-2020, 03:30 AM
How many atoms are in a 2.80 cm* 2.80cm*2.80cm cube of aluminum?2.8cm * 2.8cm * 2.8cm= 21.95 cm^3 is volume of Aluminum present Density of Al = 2.7g/cm^3 Convert volume of aluminum into grams of Aluminum, make sure your units cancel 21.95 cm^3 * (2.7g/1 cm^3) = 59.26 g Al Next, find how many moles of Al you have. MW Al = 27g/mol 59.26/27 = 2.19 moles Al Use Avogadro\'s number to find number of atoms of Al - 2.19 moles Al * (6.022x10^23 atoms/1 mol Al) = 1.32x10^24 atoms AlOther related question