A student needs 15.0 g of ethanol for an experiment. If the density of enthanol is 0.789 g/mL, how many millilitres of ethanol are needed?

Measuring which physical property is most likely to produce the most precise results when trying to identify a substance

For which one of the following reactions is the value of δh° rxn equal to δh° f for the product? a. 2 h2 (g) + o2 (g) → 2 h2o (l) b. n2 (g) + o2 (g) → 2 no (g) c. 2 h2 (g) + o2 (g) → 2 h2o (g) d. h2o (l) + 1/2 o2 (g) → h2o2 (l) e. none of the above

If two objects at different te, peraure are in contact with each other what happens to their temperature