If 12 atoms of hydrogen enter into a chemical reaction how many atoms of hydrogen must come out of the reaction

Adiver in midair has an angular velocity of 6.0 rad/s and a moment of inertia of 1.2 kg·m2. he then pulls is arms and legs into a tuck position and his angular velocity increases to 12 rad/s. the net external torque acting on the diver is zero. what is his moment of inertia in the tuck position?

Herbivores, carnivores, and omnivores are all types a. decomposers b. producers c. consumers d. biomes

Which law represents the thermodynamic statement of the conservation of energy of a system? a. the fourth law b. the first law c. the second law d. the third law