Which Statement describes the formation of stars. A. They begin in nebulas
B. Heat and gasses contract
C. Gravity causes stars to cluster
D. Dust and gasses contract

How does the principle of electromagnetism explain the interaction between earth’s magnetic field and the solar wind?

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

If maltose undergoes hydrolysis what subunits does it results to?