Strong root systems and long flexable stems allow plants to survive on the strong currents of which ecosystem?
a) ponds
b) rivers
c) lakes
d) the open ocean

How many electrons does silver have to give up in order to achieve a sido noble gas electron configuration?

Water (2510 g ) is heated until it just begins to boil. if the water absorbs 5.09×105 j of heat in the process, what was the initial temperature of the water?

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?