Answer 
 Number of molecules: 8.089×1022 molecules 
 Step-by-step explanation
The formula for this question is 
Number of molecules
= Number of moles × 6.02x1023 
Since, 
the number of moles = given mass/formula mass 
Here, 
Formula mass of sucrose= 342.3 g/mol 
Given mass= 46g 
Therefore, 
The number of molecules = given mass×6.02×1023/ 
Formula mass 
=46×6.02×1023/342.3 
=8.089×1022 molecules.