Which region is colored purple in this periodic table of the elements? a. metals b. metalloids c. nonmetals d. noble gases

Balance this equation co2(g) + h2o (g) show that the balanced equation obeys the law if conversation of mass

If a 12-v battery is connected to a circuit that has a current of 3.0 a, what is the total resistance in the circuit? 36 ohms 4 ohms 0.25 ohms

What is the atomic mass of an atom that has 6 protons, 6 neutrons, and 6 electrons? a) 6 b) 8 c) + 1 d) 12 e) 18