Chemistry, 20.11.2020 03:10 bearbri4520
Pls help with these question because I don't understand what are pure substance and how to tell
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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, 21.06.2019 21:40
During trial 2, what allowed you to determine that aluminum was the limiting reactant? check all that apply. all of the copper dissolved. all of the aluminum dissolved. the solution turned clear. the number of grams of copper(ii) chloride used in the reaction was greater than the number of grams of aluminum. the molar ratio of copper(ii) chloride to aluminum was greater than 3: 2, the equation’s molar ratio.
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Chemistry, 22.06.2019 00:00
1) this is the structure in the cell nucleus that houses a cell's genetic information
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Chemistry, 22.06.2019 09:40
Which diagram shows the correct way to represent an ionic compound of magnesium oxide?
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Pls help with these question because I don't understand what are pure substance and how to tell