I have no idea how to do these problems:

1.The price of a ream of paper is $3.30. There are 500 sheets of paper in a ream. If a sheet of paper weighs 0.500 oz, what is the price of a kg of paper? What is the cost of one sheet of paper? What is the mass (grams) of on sheet of paper?

2. Peanut oil has a density of 0.92 g/cm3. If a recipe calls for 1 cup of peanut oil (1 cup = 225 ml), what mass of peanut oil (in grams) are you using?

3. A new United States quarter has a mass of 5.63 g. What is the mass of a row of quarters laid end to end for 1 meter?

4. At 25 ºC the density of water is 0.997 g/cm3, whereas the density of ice at -10 ºC is 0.917 g/cm3. If a soft drink can whose volume is 250.0 ml is fill completely with pure water, sealed, and then frozen at -10ºC, what volume does the solid occupy? What would you expect to happen to the can?