7. A science student created the following diagram to show the process that warms the air above the ocean along Fort Lauderdale beach. She decided to label each step with the energy transfer that is happening:
Which step should be labeled conduction?
Step 1
step 2
step 3
or step 4

The density of glycerin is 1.26grams/centimeter cubed . how many is this? use the conversion rates of and . express your answer to the correct number of significant figures.

Aglow stick contains a glass vial with chemicals. when the glow stick is bent, the vial breaks and the chemicals react to produce a glow. a science student observes that a glow stick kept in the freezer glows for a longer duration than a glow stick kept at room temperature. what conclusion can be drawn based on the observation? be sure to note the outcome and test variables in the conclusion.

Find the mass, in grams, of 5.00*10^23 molecules of f2