Calculate the amount of hcn that gives the lethal dose in a small laboratory room measuring 12.0 ft×15.0 ft×9.50ft.

2. how is heavy water different from normal water

When you mate two plants together the terms is called? answer it fast as possible plz! i have a test tomorrow!

What determines the average kinetic energy of the particles in a gas? a. the number of collisions b. the number of particles c. the size of the particles d. the temperature