Molar Mass/ Percent Composition

Name We are going to calculate the Molar Mass of your MM Molecule. Watch the video on how to find the Molar Mass of a Water Molecule. Directions for Calculating Molar Mass: (DO NOT eat any of your treats until after you have finished!!)1. Open the MMs which serve as fictional atoms2. Group the MMs by color (red, orange, yellow, green, blue, brown)3. Using the following key, complete the data table below: R (Red)= 4.26 amu Or (Orange)=1.67 amu Ye (Yellow)= 7.01 amu Gr(Green)= 3.47 amu B(Blue)= 5.35 amu Br(Brown)= 6.89 amu Color Quantity x Mass (amu) = _ amu R (Red) 24 x 4.26 = 102.24 Or (Orange) 19 x 1.67 = 31.73 Ye (Yellow) 22 x 7.01 = 88.22 Gr (Green) 17 x 3.47 = 58.99 B (Blue) 15 x 5.35 = 80.25 Br (Brown) 17 x 6.89 = 117.13 How many total fictional atoms do you have? Based on your data and the atoms you have above, write the fictional formula for your MM molecule What is the total mass of your MM molecule? Next, we are going to calculate the Percent Composition of each element (color) in the molecule (jar) Use the Molar Mass of each element (color) and the Total Molar Mass from the first table to complete the table below. Atom/ Element Mass / Total Mass = Answer as Decimal x 100 = Percent Composition R (Red) 4 / 38 = x 100 = Or (Orange) / 3 = x 100 = Ye (Yellow) / = x 100 = Gr (Green) / = x 100 = B (Blue) / = x 100 = Br (Brown) / = x 100 = What is the percent composition of R? What is the percent composition of Or? What is the percent composition of Ye? What is the percent composition of Gr? What is the percent composition of B? What is the percent composition of Br? Do your percent compositions add up to 100%