You are given two samples. One sample contains one mole of aluminum (Al) and the other sample contains one mole of copper (Cu). Which of the following is/are true?
1) Aluminum has a molar mass of 26.98 g/mol
2) Copper has a molar mass of 63.55 g/mol
3) Aluminum is a lighter element compared to copper
4) Copper is a more reactive metal compared to aluminum