What is the mass of 1 mole of MgSO4? A. 88.4 g
B. 72.4g C. 120.4 g
D. 216.7g

Kc = 0.040 for the system below at 450oc. if a reaction is initiated with 0.40 mole of cl2 and 0.40 mole of pcl3 in a 2.0 liter container, what is the equilibrium concentration of cl2 in the same system? pcl5(g) ⇄ pcl3(g) + cl2(g)

Asample of aluminum foil contains 8.60 × 1023 atoms. what is the mass of the foil?

Drug abuse will not lead to physical and psychological dependence. true or false ?