Question

One molecule of ozone, O3, contains three oxygen atoms. Similarly, 1 mole of ozone contains 3 moles of oxygen atoms. We can use this mole ratio to create two conversion factors: 3 moles O 1 mole O3 1 mole Og 3 moles O and Here's how to find the number of moles of oxygen atoms in 2 moles of ozone: 3 moles O 1 mole O 2 moles O3 6 moles O

1. Calculate the number of moles of magnesium, chlorine, and oxygen atoms in 3.80 moles of magnesium perchlorate, Mg(ClO4)2.

Express the number of moles of Mg, Cl, and O atoms numerically, separated by commas.

2. A sample of propane, C3H8, contains 10.4 moles of carbon atoms. How many total moles of atoms does the sample contain?

Express the total number of moles of carbon and hydrogen numerically.

Answer 1

© mg (C10wa one mole Mg (clo4), contains - 1 mole mg 2 mole cl dX4 =8 mole 'o ? of rig (Cloy) If 3.80 moles contains 1x 3. 8 mole Mg = 3.8 mole mg 2x 3.8 mole cl = 2.6 mole cl 8x 3.8 mole o = 30.4 mole 'o' i number of moles of mg 3.8 Cl> 7.6 0 + 30.4

1 mole of C, Hg 1 mole cz Mg Contains 3 moles of c atoms 8 moles of H atoms 1 mole Cy Hg = 3 moles c atoms 10.4 moles c atoms I mole C₂Hg 3 mole Catome À 10.4 mole c atoms = 3.47 mole Costa 1 mole C, Mg x 3 mole c atoms and 8 mole H atoms. If 10.4 mole c atomj. 3 mole Caloms s 8 mole H atoms & mole katam 10.4 mole c atoms + - Hatoms 8 mole Matoms X 10.44 mole c atoms = 27.7 3 mole c atoms - Total moles a cu 10.4 mol Hy 27-7 mol 38.1 mol