Question

A student has a packet of sugar - C6H12O6. Outline briefly how a student would determine the number of molecules of sugar in the packet.

Answer 1

To find the number of glucose molecules in a packet, convert the mass of sugar to moles using the molar mass, and then multiply by Avogadro's number to get the total molecules.

Step-by-step explanation:

To determine the number of molecules of sugar in a packet, you would first need to know the mass of the sugar in the packet. Convert this mass into moles by using the molar mass of sugar, which for glucose (C6H12O6) is approximately 180.16 g/mol. Then, use Avogadro's number (6.022×10^23 molecules/mol) to convert the amount in moles to the number of molecules.

For example, if a packet contains 10 grams of glucose, this is what you would do:

1. Calculate moles of glucose: 10 g ÷ 180.16 g/mol = 0.0555 moles.
2. Determine the number of molecules: 0.0555 moles × 6.022×10^23 molecules/mol = approximately 3.34×10^22 molecules of glucose.