Question

The cost of glucose (C6 H12 O6) is Rs. 25 per kg. What is the cost of glucose per mole?

Answer 1

Molecular mass of glucose=180
Now mole of glucose=1000/180=5.56(approximately 6)
Price of 6 Mole is 25 ,
6 Mole glucose=25
1 mole glucose=?
=1x25/6
=4 Rs

Answer 2

Answer: The cost of glucose per mole is Rs 4.5

Explanation:

To calculate the number of moles, by using the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$

Given mass of glucose = 1 kg = 1000 g    (Conversion factor: 1 kg = 1000 g)

Molar mass of glucose = 180.156 g/mol

Putting values in equation 1, we get:  

$\text{Moles of glucose}=\frac{1000g}{180.156g/mol}=5.55mol$

We are given:

Cost of 5.55 moles of glucose = Rs 25

So, cost of 1 mole of glucose will be = $\frac{25}{5.55}\times 1=Rs.4.5$

Hence, the cost of glucose per mole is Rs 4.5