If the frequency of a wave doubles, which of the following could be true? a. the pitch gets lower b. the pitch gets higher c. the pitch does not change d. the pitch becomes negative

Element before carbon on the periodic table

Ammonium perchlorate nh4clo4 is the solid rocket fuel used by the u.s. space shuttle. it reacts with itself to produce nitrogen gas n2 , chlorine gas cl2 , oxygen gas o2 , water h2o , and a great deal of energy. what mass of nitrogen gas is produced by the reaction of 2.1g of ammonium perchlorate?

Which tool is least in predicting weather