Answer:
A) 0.003512 moles
B)
Carbon = 0.04214 moles
Hydrogen = 0.07726 moles
Oxygen = 0.03863 moles
C) Carbon = 2.54*10^22 atoms
Hydrogen = 4.65 *10^22 atoms
Oxygen = 2.33 * 10^22 atoms
Explanation:
Step1: Data given
Mass of sucrose = 1.202 grams
Molar mass of sucrose = 342.3 g/mol
Step 2: Calculate moles of sucrose
Moles sucrose = mass / molar mass
Moles sucrose = 1.202 grams / 342.3 g/mol
Moles sucrose = 0.003512 moles
Step 3: Calculate the moles of each element in C12H22O11.
For 1 mol of sucrose we have 12 mol of carbon, 22 mol of hydrogen and 11 mol of oxygen
Carbon = 12*0.003512 = 0.04214 moles
Hydrogen = 22* 0.003512 = 0.07726 moles
Oxygen = 11* 0.003512 = 0.03863 moles
Step 4: Calculate the number of atoms of each type in C12H22O11.
Carbon = 0.04214 moles * 6.022*10^23/mol = 2.54*10^22 atoms
Hydrogen = 0.07726 moles * 6.022*10^23/mol = 4.65 *10^22 atoms
Oxygen = 0.03863 moles * 6.022*10^23/mol = 2.33 * 10^22 atoms
