Asoft drink contains 46 g of sugar(sucrose c12h22o11) how many sugar molecules are present?

Number of molecules:  8.089×1022 molecules

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.  

"among the transition metal elements, manganese and zinc have a slight lowering of electronegativities. the reason behind this is that the nuclear charges of these elements are slightly weaker than the other transition metal elements due to the way their valence electrons are filled up. both manganese and zinc have their valence electrons filled up to the 4th shell with 1 pair of electrons (4s2) completely occupying it. although the electrons in the 3rd shell (3d) are yet to be paired since the outer most shell is filled up, the ability of the nucleus to attract electrons is lessened. hence,   the electronegativity (or the ability to attract electrons) is lessened."

"standard molar enthalpy:

h2o ( liquid water ) : - 285.8 kj/mole

h2o ( water vapor ) : - 241.8 kj / mole.

δhrxn = - 241. 8 - ( - 285.8 )= -241.8 + 285.8 = 44.0

answer: 44.0 kj"