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2) A sample of table sugar (sucrose C12H22O11) has a mass of 1.202g
A. Calculate the number of moles of C12H22O11 contained in the sample.
B. Calculate the moles of each element in C12H22O11.
C. Calculate the number of atoms of each type in C12H22O11.
SHOW WORK FOR ALL 3 PLEASE!!!

Respuesta :

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