Calculate the mass of water and mass of glucose required to make 250 g of 40% solution of glucose.

To calculate the mass of water and glucose required to make a 250g of 40% glucose solution, follow these steps:

1. First, understand that a 40% glucose solution means that 40g of glucose is present in every 100g of the solution.

2. To make a 250g solution, multiply the percentage of glucose by the total mass of the solution. This gives the mass of glucose required.

   Calculation: 40/100 * 250g = 100g

   So, you need 100g of glucose.

3. To find the mass of water required, subtract the mass of glucose from the total mass of the solution.

   Calculation: 250g - 100g = 150g

   So, you need 150g of water.

In conclusion, to make a 250g of 40% glucose solution, you need 100g of glucose and 150g of water.