How many grams are in 5 moles of calcium fluoride ?

Rutherford's experiment indicated that matter was not as uniform as it appears what part of his experimental results implied this idea

Which fact represents evidence for the big bang theory?

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