Chemistry, 18.07.2019 10:10 kitykay2399
The radioisotope cesium-137 has a half-life of 30 years. a sample decayed at the rate of 544 counts per minute in the year 1985. in what year will the decay rate be 17 counts per minute?
Answers: 1
Chemistry, 22.06.2019 07:00
The blackbody curve for a star name zeta is shown below. what is the peak wavelength for this star ?
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Chemistry, 22.06.2019 13:00
Adepositional also feature that forms where a stream enters a lake or an ocean is a
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Chemistry, 22.06.2019 18:50
Question 3(multiple choice worth 4 points) (04.04 lc) what does it mean when an element is reduced? it empties a valance shell, reducing its atomic radius. it gains electrons, reducing its overall charge. it increases electronegativity, reducing its ability to bond. it loses electrons, reducing its electron number.
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Chemistry, 23.06.2019 15:00
In two or more complete sentences describe all of the van der waals forces that exist between molecules of sulfur dioxide, so2.
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The radioisotope cesium-137 has a half-life of 30 years. a sample decayed at the rate of 544 counts...
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