Question

3.42 g of sucrose are dissolved in 18g of water in a beaker. The number of oxygen atomsin the solution are

Answer 1

Explanation:

Step 1). Molar mass of sucrose,

<br> or 342g = 1 mole of sucrose. <br> 3.42 g = 0.01 mole of sucrose. <br>

1 mole of sucrose

contains O-atoms =

atoms <br>

0.01 mole of sucrose will contain O-atoms. <br>

atoms =

<br> Step 2: 18 g of water

= 1mole of water. <br> 1 mole of water

contains O-atoms

atoms. <br> step. 3 By adding the number of O-atoms present in 3.42g of sucrose and 18g of water, we get <br>

<br>

atoms.