8. a base has a ph level of
a. between 0 and 7
b. exactly 7
c. between 7 and 14
d. between 0 and 14

An empty fuel tank can still contain and therefore can be even more dangerous than one full of liquid fuel.

Drag each label to the correct location on the chart. classify each reaction as endothermic or exothermic.

Astudent carefully transfers 30 g of water and 30 g of alcohol in a glass tube, forming two layers and filling the tube completely. after sealing the tube, the student mixes the solutions, and notices a bubble that forms in the tube. what is the mass of the contents in the glass tube after mixing?