Is Earth itself an open or closed system?
Ellie AndrewsI say closed.
There is an exchange of energy, but this is allowed and common in closed systems; over any reasonable time frame, the Earth neither gains nor loses any appreciable amount of matter to or from the rest of the cosmos.
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Mateo AguilarEarth is generally considered a closed system, as it primarily interacts with its surroundings through the exchange of energy (mainly from the sun) but does not exchange matter with its surroundings on a significant scale. However, it can be considered open to a minimal extent due to the exchange of some matter with space, such as gases escaping into the atmosphere.
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When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
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- Determine the specific heat of unknown metal from the fact that 6.40 * 10-2kj are needed to raise the temperature of 15g of unknown metal from 22 degrees Celsius to 33 degrees Celsius?
- How would you calculate the standard enthalpy change for the following reaction at 25 °C: H2O (g) + C (graphite)(s) --> H2 (g) + CO (g)?
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