Which of the following is an indication of a chemical reaction? ( freezing, melting ,release of heat ,all of the above)

The isotonic saline solution described in part a is connected to an unknown solution via a semipermeable membrane, the unknown solution level drops. based on this information, what can be said about these two solutions?

There are approximately 15 milliliters (ml) in 1 tablespoon (tbsp). what expression can be used to find the approximate number of milliliters in 3 tbsp?

Reactions in cells take place at about a. 40°c b. 0° c. 100°c d. 60°c