2g of phosphorus-32 has decayed to 0.25 g after 42 days. what is the half-life of phosphorus-32? a. 21 days b. 11.5 days c. 8 days d. 14 days

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

For the reaction, 4 a(g) + 3 b(g) => 2 c(g), the following data were obtained at constant temperature. experiment initial[a],mol/l initial [b],mol/l initial rate, m/min 1 0.200 0.150 5.00 2 0.400 0.150 10.0 3 0.200 0.300 10.0 4 0.400 0.300 20.0 which of the following is the correct rate law for the reaction? 1. rate = k[a]2[b]2 2. rate = k[a][b] 3. rate = k[a]2[b] 4. rate = k[a][b]2

How can a mixture of salt water be separated into salt and water