After sugar dissolves in water, the sugar is no longer visible. The mixture tastes sweet so
you know the sugar is still there.
Why can't you see the sugar anymore?
Justify your answer.

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

Chlorophyll a had the molecular formula c55h72mgn4o5 how many atoms are in this molecule

Which of the following is not true about the atomic model of substances?