What is the center of the atom called?
a. electron
b. neutron
c. nucleus
d. proton

Which of these properties, used alone, would be least useful in identifying most minerals? a. color b. luster c. streak d. density

What is the mass of each element in a 324.8 sample of co2

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