1. collect data: use the gizmo to collect data about minerals b through f. fill in the data table.
sample
crystal shape
color
volume
density
hardness
streak
fizes in acid?
mm 0 0

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

Ahelium balloon contains 16.9 l of helium at stp. how many atoms of helium are in the balloon

Sand is more likely than shale to preserve fossils. true false