A3.25-g sample of sodium hydrogen carbonate reacts completely with sulfuric acid in a time of 20 s. express the average rate of reaction as b. mass of h2so4 consumed per second c. amount of h2so4 consumed per second d. amount of co2 produced per second

True or false, the three major scales used to measure earthquakes are mercalli scale, richter scale and magnitude scale

Which function is performed by earths atmosphere? a. ultraviolet rays are prevented from reaching the ozone layer. b. earths temperature is raised and moderated by trapping in heat c. charged particles from the sun are prevented from reaching earth. d. magnetic charges from space are prevented from reaching earths surface.

Which reason best explains why metals are malleable? a)because they have delocalized electrons b)because they have localized electrons c)because they have ionic bonds d)because they have rigid bonds