A chemical change affects on the molecular level of matter, which makes it irreversible. Combustion is a pretty good exmple. Physical changes are reversible and dont alter the formula. Hope this helped!
Answer:
884.56 torr
Explanation:
Formula: 
P = Pressure
V = Volume
T = Temperature in kelvin (Celsius + 273.15)


P = 884.56169
Answer:
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If the moon did not rotate we would see all hemispheres of the moon as it revolves around the Earth and not just the phases.
Answer:
Higher the frequency, the higher the energy
Explanation:
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