The diagram below shows the different phase transitions that occur in matter. Solid
Liquid
16
Gas
Which arrow would most likely represent the phase change that involves the same amount of energy as arrow 1?
O2
O 3
O4
O 5
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The molecular formula for caffeine is cshion402. which of the following elements is not found in caffeine?

1. if you have a gas at 127 degrees c, what is it's absolute temperature (kelvin)? a. 200kb. 300kc. 400kd. 500k2. if you had a gas whose absolute temperature measured 45 k, what is that temperature in celsius? a. -228 cb. -300 cc. 125 cd. 112 c

Which of the following describes a compound? (hint: carbon and oxygen bo a. a piece of pure carbon, containing only carbon atoms b. oxygen gas surrounding a solid piece of carbon c. a substance made of two oxygen atoms for each carbon atom carbon and oxygen atoms mixed without being bonded together