A sample of potassium has the following composition.
Isotope: 39K 40K 41K
% abundance: 93.22...
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Chemistry, 21.06.2019 23:00
The drawing represents the movement of particles in a substance. what changes of state can this substance undergo
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Chemistry, 22.06.2019 05:00
Type the letter that represents the correct location for each particle type below.
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All cells are made of four types of acids, lipids, proteins, and carbohydrates.
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Chemistry, 22.06.2019 08:30
What method(s) do plants use to obtain nitrogen? select all that apply. absorb it from the atmosphere use bacteria to convert nitrogen to usable form obtain usable nitrogen compounds from the soil absorb nitrogen from water taken in at the roots
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