What is the DENSITY of an object with a mass of 18 grams and a volume of 3 ml?
51 g/ml
6 g/ml
21 g/ml
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A100-watt light bulb radiates energy at a rate of 100 j/s. (the watt, a unit of power or energy over time, is defined as 1 j/s.) if all of the light emitted has a wavelength of 525 nm , how many photons are emitted per second?

Draw the skeletal structures of two different molecules that are each made of 5 carbon atoms and 12 hydrogen atoms.

How do dying stars contribute to the formation of planets