How many moles are contained in each number of grams of table sugar (c12h22o11, molar mass 342.3 g/mol)?

The molecular formula for sugar is C12H22O11 and it’s molar mass is 342.3 g/mol

This means that 1 mol of sugar weighs 342.3 g

Therefore we need to find how many moles are in 1 g of sugar

342.3 g Of sugar contains 1 mol

Therefore 1 g of sugar contains - 1 g / 342.3 g/mol = 0.0029 mol

There are 0.0029 mol of sugar in 1 g

your answer is a. the enthalpy of formation for a pure element in its standard state is always positive.