How many moles are in 7.9 grams of P 2 O 5?

Which of your 24 wells had indications that a chemical reaction occurred? how were you able to tell that a chemical reaction occurred? which of your 24 wells had indications that a physical reaction occurred? how were you able to tell that a physical reaction occurred? report on both mixing and evaporation. make a general statement about whether your hypotheses were validated or rejected. must your hypotheses be correct for this to be a successful laboratory?

A) equal lines b) parallel lines c) perpendicular lines d) none of the above

What can a drop of liquid mercury be described as?