Which of the following equations is balanced correctly? a. 3 h2o → h2 + 3 o2 b. cl2 + 2 kbr → kcl + br2 c. 2 c2h2 + 5 o2 → 4 co2 + 2 h2o d. 2 c3h3 + o2 → 2 co2 + h2o

In a stagnant pool of water, a crayfish may spend much of its time lying with one side of its carapace near the surface of the water. in this position, it will move the walking legs on that side in a rhythmic back-and-forth motion. explain the likely function of this behavior.

Which of the choices are parts of an atom? select all that apply. a.) compound b.) electron c.) neutron d.) molecule e.) photon f.) proton g.) element

Acircuit contain a 5-ohm,a3-ohm,and an 8-ohm resistor in series. what is the total resistance of the circuit