Chemistry, 19.09.2019 22:30 kitkatwolf
Select all that apply. an ellipse has one center two foci a diameter a major axis a minor axis
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Why are people not able to scuba dive in the deep part of the ocean
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What are the similarities of physical and chemical change ?
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Imagine that you push on a large rock. at what point does your effort change the rock’s mechanical energy?
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Chemistry, 22.06.2019 14:00
The content of manganese (mn) in steel was determined spectrophotometrically and with the use of the standard addition method. an unknown sample of mn from a digested steel sample gave an absorbance of 0.185 when analyzed spectrophotometrically. when 5.00 ml of solution containing 95.5 ppm mn was added to 50.0 ml of the unknown steel solution (digested sample), the absorbance was 0.248. calculate the concentration, in parts-per-million (ppm), of mn in the digested steel sample solution.
Answers: 3
Select all that apply. an ellipse has one center two foci a diameter a major axis a minor axis...
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