Chemistry, 18.07.2019 12:00 ABrabbit732
An ice-skating rink has tubes under its floor to freeze the water. salt water is cooled well below the freezing point of water and pumped through the tubes to freeze the water in the rink. why can the salt water be cooled so low without freezing? f salt has a very low freezing point. g adding salt to water lowers its freezing point. h the salt water is constantly absorbing energy from its surroundings. j movement of the salt water through the tubes keeps it in the liquid state.
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Chemistry, 21.06.2019 16:30
Asample of silver (with work function ? = 4.52 ev) is exposed to an ultraviolet light source (? = 200 nm), which results in the ejection of photoelectrons. what changes will be observed if: silver is replaced with copper (? = 5.10 ev) more photoelectrons ejected no photoelectrons are emitted fewer photoelectrons ejected more energetic photoelectrons (on average) less energetic photoelectrons (on average)
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Chemistry, 22.06.2019 06:00
In an investigation that uses the scientific method, which step immediately follows making a hypothesis? o summarizing the results o asking a question o making observations designing an experiment mark this and retum save and exit next submit
Answers: 2
Chemistry, 23.06.2019 03:30
Ahelium balloon contains 16.9 l of helium at stp. how many atoms of helium are in the balloon
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An ice-skating rink has tubes under its floor to freeze the water. salt water is cooled well below t...
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