The ability of h2so4(aq) to change blue litmus red is mainly due to the presence of

What three things determine the shape and size of a puddle when water is poured out onto a surface

What was bohr’s contribution to the planetary model

Dumbledore decides to gives a surprise demonstration. he starts with a hydrate of na2co3 which has a mass of 4.31 g before heating. after he heats it he finds the mass of the anhydrous compound is found to be 3.22 g. he asks everyone in class to determine the integer x in the hydrate: na2co3·xh2o; you should do this also. round your answer to the nearest integ