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Home Q & A Board Science-Related Homework Help Chemistry (Moderator: Laser_3)
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datwillis datwillis
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12 years ago
I'm doing a science project and there are a few questions that I need help on.

1.) How does atmospheric pressure affect the state of water?

2.) How does atmospheric pressure affect blood pressure?

3.) What is meant by the term "geologically dead" body of the solar system?

4.) What is the brightness of mars as seen from earth?

I've been searching forever on the internet and I can't find answers to any of these questions. Thanks for the help guys.
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12 years ago
1) it changes the points of state change. At lower pressure, the boiling point and the melting point drop down and viceversa.

2) Same as above although irrelevant since our blood doesn't change between states. It also changes our blood pressure I guess because the external (atmospheric) pressure is transmitted through our muscles to capillaries, arteries and veins. Probably the difference between systolic and diastolic pressure is higher under higher atmospheric pressure. But I'm guessing.

3) Means that there's no geological activity. No plates movement, etc. A totally stable piece of rock floating in space.

4) Reflection of the sun light.
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asorrell8asorrell8
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12 years ago
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