Mole Calculations

Convert 8.30 x 10$^{24}$ atoms to moles of atoms. Use dimensional analysis and show how the units cancel to give the correct answer.

Convert 5 moles of carbon to grams.

A typical aspirin, C$_9$H$_8$O$_4$ , tablet contains 0.36 g. How many molecules are present?

A sample of 45.8 g of MgSO$_4$ $\cdot$ 4 H$_2$O contains how many moles of MgSO$_4$ $\cdot$ 4 H$_2$O ?