Need help answering problems 2 and 3 (problem 1 is given for a reference)

1.) Make 500ml of a 5% (w/v) sucrose solution, starting with dry sucrose and water. 2.) Convert the concentration (5g/100ml) to M (mol/L). The molecular weight of sucrose is 342.3 g/mol. 3.) Your lab protocol requires 100 ml of a 1% sucrose solution. How can you create this from your 5% sucrose stock?