If an atom of nitrogen binds wit three hydrogen atoms to form a molecule of ammonia, how many lone pairs of electrons does nitrogen have? a. one b. three c. four d. five

The law of conservation of energy states that energy cannot be created or , energy can be from one substance to another. the first blank is ' destroyed ' and for the second blank is ' transferred '

Which of the following are appropriate acceleration units?

You are standing on a boat. which of the following strategies will make the boat start moving? a. pushing the mast b. throwing some cargo out of the boat c. pushing the front ofthe boat d. pushing another passenger