In a series circuit with three bulbs, a. there are many paths for the current to take. b. the remaining two bulbs are not affected if one bulb burns out. c. all of the bulbs become dimmer as more bulbs are added. d. a switch is never used.

Which of the following elements is in the same period as phosphorus? a. carbon c. nitrogen b. magnesium d. oxygen select the best answer from the choices provided a b c d

Which best represents the law of conservation of mass ?

(a) calculate the number of electrons in a small, electrically neutral silver pin that has a mass of 10.0 g. silver has 47 electrons per atom, and its molar mass is 107.87 g/mol. (b) imagine adding electrons to the pin until the negative charge has the very large value 1.00 mc. how many electrons are added for every 109 electrons already present